SKU: 98561095802

AudioQuest PowerQuest 3 Surge Protector

Sale price$269.98 Regular price$299.98
Save 10%

Pay in installments of $75.00 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 1 - Aug 6

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

AudioQuest PowerQuest 3 Surge ProtectorPlease Call or Email us to place your orders! AudioQuest PowerQuest 3 Surge Protector at Vinyl Sound Toronto Canada The PowerQuest 3 (PQ 3) is an 8 outlet power conditioner and non sacrificial surge protector from AudioQuest (San Luis Obispo, California, USA), available at Vinyl Sound in Toronto, Canada. Designed by AudioQuest AC power authority Garth Powell, the engineer behind the award winning Niagara Series, the PQ 3 steps up from the PowerQuest 2

Please Call or Email us to place your orders!

AudioQuest PowerQuest 3 Surge Protector at Vinyl Sound Toronto Canada

The PowerQuest 3 (PQ-3) is an 8-outlet power conditioner and non-sacrificial surge protector from AudioQuest (San Luis Obispo, California, USA), available at Vinyl Sound in Toronto, Canada. Designed by AudioQuest AC power authority Garth Powell, the engineer behind the award-winning Niagara Series, the PQ-3 steps up from the PowerQuest 2 by adding dual Ultra-Linear Filtration addressing both Differential-Mode and Common-Mode AC noise, two additional AC outlets, a second 4K/8K Video Optimized outlet, two extra USB charging ports, and expanded signal-line protection covering coaxial, RJ11 telephone, and RJ45 network connections. Like all PowerQuest models, its non-sacrificial surge protection withstands repeated 6000V/3000A input surges without any component degradation, and its Extreme Voltage Shutdown circuit disconnects all outlets within 0.25 seconds at 140VAC. The result is a comprehensive, slim-profile power management hub for complete home theater and hi-fi systems, reviewed by Twittering Machines as a product that makes your system "sound better when you plug everything into it."

Ultra-Linear Filtration: Dual-Mode Noise Elimination

The defining upgrade of the PowerQuest 3 over the PowerQuest 2 is its Ultra-Linear Filtration system, which addresses both of the two most prevalent categories of AC noise simultaneously. Differential-Mode noise rides between the hot and neutral conductors of the AC line and is primarily generated by switching power supplies inside the system's own components, backwashed onto the shared power line and recirculated into neighboring devices. The PQ-3's Differential-Mode filter delivers in excess of 22dB of noise reduction from 30kHz to 1GHz, covering the full RF spectrum of switching-regulator interference. Common-Mode noise rides on both AC conductors simultaneously relative to ground, and is primarily induced by external sources: cell towers, AM and FM broadcast signals, Bluetooth transmitters, and shortwave radiation that the AC power leads pick up like antennas. The PQ-3's Common-Mode filter provides in excess of 22dB of noise reduction from 30kHz to 100MHz. Both filters are linearized for dynamic, rising line impedance with frequency, ensuring that the filter circuit does not increase AC line impedance in a way that would compress the dynamic headroom of connected amplifiers. The PowerQuest 2's single Differential-Mode filter addresses only one half of this noise picture; the PQ-3 addresses both.

Non-Sacrificial Surge Protection and Extreme Voltage Shutdown

Conventional surge protectors use metal oxide varistors (MOVs) that sacrifice themselves to absorb surge energy, degrading with every event until protection is gone while the unit appears normal. The PowerQuest 3 uses a non-sacrificial circuit with no components that wear out under surge conditions. AudioQuest tests the PQ-3 at 6000V and 3000A, the maximum surge levels that can survive a building's AC electrical panel, repeatedly, with no degradation to any part of the protection circuit. The joule rating is unlimited precisely because nothing is being consumed. Alongside this is the Extreme Voltage Shutdown circuit, a separate protection mechanism that monitors incoming line voltage continuously. When AC voltage rises to 140VAC, whether from a grid fault, a neutral wire failure, or an electrical storm event, the circuit activates the main power relay to disconnect all eight outlets within 0.25 seconds, illuminating the red Overvoltage Protection LED. The relay resets automatically once line voltage returns to a safe range, with no manual intervention required.

4K/8K Video Optimized Ultra-Linear Outlets and Application-Optimized Layout

The PQ-3 provides two dedicated 4K/8K Video Optimized Ultra-Linear Filter outlets (Outlets 1 and 5), doubling the video-optimized capacity of the PowerQuest 2. These outlets layer an additional Noise-Dissipation technology on top of the full Ultra-Linear Filter to specifically address the power-supply sensitivity of flat-panel televisions, OLED and LCD displays, projectors, and universal disc players. The four Ultra-Linear Filter outlets (Outlets 2, 3, 6, and 7) serve source components including network streamers, DACs, disc players, computers, modems, and routers. The two High-Current outlets (Outlets 4 and 8) are optimized for components with high and variable current demand, including power amplifiers, AV receivers, soundbars, and powered subwoofers, delivering filtered AC without adding impedance that would restrict current delivery during dynamic peaks. AudioQuest specifies exact outlet assignments for best results, and the outlets are laid out across two rows so all eight remain accessible whether the unit is mounted vertically with its detachable base or placed horizontally on a shelf.

Key Features

  • Non-Sacrificial Surge Protection (6000V/3000A, unlimited joules): No MOV components to degrade with surge events. Withstands repeated maximum-rated input surges without any protection loss and never needs to be replaced.
  • Extreme Voltage Shutdown at 140VAC: Disconnects all outlets within 0.25 seconds when incoming voltage reaches 140VAC, with automatic reset once line voltage stabilizes. Red LED indicator activates during an overvoltage event.
  • Ultra-Linear Dual Filtration: Differential-Mode filter provides 22dB+ noise reduction from 30kHz to 1GHz; Common-Mode filter provides 22dB+ noise reduction from 30kHz to 100MHz. Both linearized to avoid dynamic compression of connected amplifiers.
  • 2 x 4K/8K Video Optimized Ultra-Linear Filter Outlets (1, 5): Full Ultra-Linear Filter plus additional Noise-Dissipation technology tuned for the power-supply requirements of flat-panel TVs, OLED and LCD displays, projectors, and universal disc players.
  • 2 x High-Current Outlets (4, 8): For power amplifiers, AV receivers, soundbars, and subwoofers. Filtered without added impedance to preserve dynamic headroom.
  • 4 x Ultra-Linear Filter Outlets (2, 3, 6, 7): For source components, DACs, network streamers, disc players, computers, modems, and routers.
  • 4 x USB-A Charging Ports, 4.8A Total: High-speed USB charging integrated into the unit for phones, tablets, remote controls, and other USB devices.
  • Expanded Signal-Line Protection: Coaxial F-connectors (75-ohm) for cable or satellite, RJ11 jacks for telephone, and RJ45 jacks for network connections, providing sacrificial surge protection for all external signal lines entering the system.
  • Included Directionally Optimized Concentric-Geometry AudioQuest Power Cord (2 metres): AudioQuest-grade power cord with flat-to-wall plug for tight installations behind cabinets and furniture.
  • Slim Profile with Detachable Base and Wall-Mount Option: Mounts vertically behind a cabinet using the detachable base, with power cords plugging straight down into the top row; base removed for horizontal shelf placement. Rear panel includes mounting holes and a drill template for wall or baseboard mounting.
  • 5-Year Warranty with Connected Equipment Protection: AudioQuest's five-year product warranty backed by a Connected Equipment Protection Warranty for connected audio and video gear.

Technical Specifications

Total AC Outlets 8 (application-optimized)
Outlets 1, 5 4K/8K Video Optimized Ultra-Linear Filter
Outlets 2, 3, 6, 7 Ultra-Linear Filter (source components)
Outlets 4, 8 High-Current (amplifiers, receivers, subwoofers)
Surge Protection Type Non-Sacrificial (unlimited joule rating)
Surge Rating 6000V / 3000A (repeated)
Extreme Voltage Shutdown 140VAC, activates within 0.25 seconds, auto-resets
Differential-Mode Noise Dissipation 22dB+ reduction, 30kHz to 1GHz
Common-Mode Noise Dissipation 22dB+ reduction, 30kHz to 100MHz
Maximum Input Current 15A RMS
USB Charging 4 x USB-A ports, 4.8A total capacity
Signal-Line Protection Coaxial F-connector (75-ohm), RJ11 telephone, RJ45 network
Included Power Cord 2m Directionally Optimized Concentric-Geometry AudioQuest cord, flat-to-wall plug
Dimensions 15.47" L x 3.15" W x 7.40" H
Mounting Options Vertical (detachable base), horizontal (base removed), wall or baseboard (mounting holes included)
Status Indicators Side-panel LED "Protection On"; red LED "Overvoltage Protection"
Warranty 5 years with Connected Equipment Protection Warranty

Connections at a Glance

  • Outlets 1, 5: 4K/8K Video Optimized Ultra-Linear Filter. Best for TVs, projectors, universal players
  • Outlets 2, 3, 6, 7: Ultra-Linear Filter. Best for streamers, DACs, disc players, computers, modems, routers
  • Outlets 4, 8: High-Current. Best for power amplifiers, AV receivers, soundbars, subwoofers
  • 4 x USB-A ports for device charging (4.8A total)
  • Coaxial F-connector in/out (75-ohm) for cable or satellite signal-line protection
  • RJ11 in/out jacks for telephone signal-line protection
  • RJ45 in/out jacks for network signal-line protection
  • IEC inlet: accepts included 2m AudioQuest directionally optimized concentric-geometry power cord

Frequently Asked Questions

What is the AudioQuest PowerQuest 3?

The AudioQuest PowerQuest 3 (PQ-3) is an 8-outlet power conditioner and non-sacrificial surge protector designed by Garth Powell for home theater and hi-fi systems. It features non-sacrificial surge protection rated at 6000V/3000A with an unlimited joule rating, Extreme Voltage Shutdown at 140VAC within 0.25 seconds, dual Ultra-Linear Filtration with Differential-Mode (22dB+, 30kHz to 1GHz) and Common-Mode (22dB+, 30kHz to 100MHz) noise dissipation, two 4K/8K Video Optimized outlets, two High-Current outlets, four Ultra-Linear Filter outlets, four USB-A charging ports at 4.8A total, and expanded signal-line protection for coaxial, telephone, and network connections. It is available at Vinyl Sound in Toronto, Canada.

How does the AudioQuest PowerQuest 3 compare to the PowerQuest 2 or the Furman PST-8?

The PowerQuest 3 upgrades over the PowerQuest 2 in three key areas: it adds Common-Mode noise filtration (22dB+ from 30kHz to 100MHz) on top of the Differential-Mode filter already present in the PQ-2, it provides eight outlets instead of six, and it expands signal-line protection to include RJ11 telephone and RJ45 network jacks alongside the coaxial connectors. Compared to the Furman PST-8, the PQ-3 uses non-sacrificial surge protection with no MOV components to degrade, whereas the Furman PST-8 relies on series-mode surge protection combined with MOV-based clamping. AudioQuest's Ultra-Linear dual-mode filter addresses both Differential-Mode and Common-Mode noise independently with over 22dB of measured reduction each, a specification comparable to Furman's SMP and LiFT technologies but delivered in a slimmer, non-rack-mount form factor.

What is Common-Mode noise and why does it matter for audio and video?

Common-Mode noise is RF interference that appears simultaneously on both the hot and neutral AC conductors, riding on both lines together relative to ground. It is primarily induced by external RF sources: cell towers, AM and FM broadcast transmitters, Bluetooth devices, and shortwave signals that the AC wiring in a home or apartment picks up like an antenna. This noise bypasses the power supplies of connected components and couples directly into sensitive audio and video circuits, raising the system's noise floor and causing subtle degradation in detail retrieval and picture quality. Differential-Mode filters, which address noise between the hot and neutral conductors, cannot reduce Common-Mode noise. The PowerQuest 3's dedicated Common-Mode filter handles this separate category of AC contamination, which is the key technical distinction between the PQ-3 and the lower-cost PowerQuest 2.

Can I plug my power amplifier or AV receiver into any outlet on the PowerQuest 3?

For best results, AudioQuest recommends connecting power amplifiers, AV receivers, soundbars, and subwoofers exclusively to Outlets 4 and 8, the dedicated High-Current outlets. These outlets are optimized for components with high and variable current demand, providing filtered AC without introducing additional impedance that would restrict instantaneous current delivery during loud passages and dynamic peaks. Connecting a power amplifier to one of the Ultra-Linear Filter outlets may limit its dynamic headroom if the filter circuit impedes the sudden high-current draw that large-signal transients require.

What is the difference between the PowerQuest 3's sacrificial and non-sacrificial protection circuits?

The PowerQuest 3's main AC outlet protection is non-sacrificial: the surge protection circuit for all eight AC outlets contains no components that are consumed or degraded by absorbing surge energy, and is rated for repeated 6000V/3000A events without any wear. The signal-line protection circuits on the coaxial F-connectors, RJ11 telephone jacks, and RJ45 network jacks are sacrificial by design, using small protection devices that absorb surge energy and may need replacement after a major lightning or surge event. AudioQuest clearly distinguishes these two systems: the AC outlet protection is permanent, while the signal-line protection is a wear-rated sacrificial add-on for external connections.

Where can I buy the AudioQuest PowerQuest 3 in Toronto or Canada?

The AudioQuest PowerQuest 3 is available in Toronto, Canada at Vinyl Sound, an authorized AudioQuest dealer. You can purchase it in store or through the Vinyl Sound online store at vinylsound.ca, with shipping available across Canada. Purchasing from an authorized dealer ensures coverage under AudioQuest's five-year product warranty and Connected Equipment Protection Warranty.

Does the PowerQuest 3 restrict current to connected amplifiers?

No, the PowerQuest 3's Ultra-Linear filters are specifically linearized for dynamic, rising line impedance with frequency, from 0.05 ohms at the source end and 10 to 50 ohms at the load end depending on system current draw. This linearization is designed so that the filter does not add meaningful impedance to the AC path during the high-current transients that amplifiers and receivers demand during loud musical passages. The two dedicated High-Current outlets handle the highest-demand components, while the Ultra-Linear Filter outlets provide noise reduction without dynamic compression for source-level components.

How is the PowerQuest 3 installed behind a TV cabinet or in a rack?

The PQ-3 ships with a detachable base that converts it to vertical orientation, with power cords plugging straight down into the top row of outlets for a tidy behind-cabinet installation. Removing the base exposes all eight outlets across two rows for horizontal shelf placement. The rear panel includes mounting holes and an included drill template for permanent wall or baseboard mounting. The included 2-metre AudioQuest power cord features a flat-to-wall plug that lies flush against the wall behind furniture, minimizing the depth footprint of the installation. The slim 3.15-inch width and 7.40-inch height make the PQ-3 practical in confined spaces behind TVs, AV racks, and media consoles.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 98561095802

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 9 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
B
Verified Purchase
banjo player
Draper, US
★★★★★ 5
Solid unit
Color: Black
Handheld Mixer/Frother Review A Premium Choice That Transforms Morning Coffee I am thoroughly impressed with this handheld mixer and frother. Each morning, I blend cacao and collagen powder into my coffee, and in the past, I always ended up with stubborn lumps using only a spoon or whisk. I had previously purchased a few inexpensive handheld mixers, but they disappointed me both in price and performance, struggling to mix the powders thoroughly—especially at the bottom of the cup. I came close to abandoning handheld mixers altogether, but decided to give it one last try. After reading countless reviews and carefully comparing models, I opted to invest in a higher-end handheld mixer. The anticipation was high—would this mixer truly distinguish itself from the budget options cluttering my kitchen drawer? From the moment I unboxed it, the difference was clear. The mixer felt substantial in my hand, and the build quality reflected thoughtful engineering. While this model cost roughly twice as much as the cheaper alternatives, it proved to be well worth the investment. Initially, I was concerned about the dial at the top, fearing it might be difficult to control. However, I was pleasantly surprised by its intuitive operation. The unit offers a solid feel, plenty of power, and a versatile range of speeds—from a gentle stir perfect for coffee to an impressively fast setting. I had not previously considered using this mixer as a frother, but as a cappuccino enthusiast, I decided to give it a try. I heated both 2% milk and oat milk to take the chill off, then submerged the mixing wand. Allowing the mixer to rise above the milk introduced air and created a rich, creamy foam—an unbelievable result. My homemade cappuccino now tastes like something from a café. The controls are robust, the construction is reliable, and the power is consistent. Cleanup is effortless, requiring only a quick rinse under the tap. The battery life is also noteworthy, lasting through several uses without losing strength. If you are hesitant to spend a bit more on a quality handheld mixer, I wholeheartedly recommend making the investment. This mixer has become an essential part of my morning routine. Excellent product—well done!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 13, 2025
P
Verified Purchase
Philip B. Corriveau
Massapequa, US
★★★★★ 5
Solid, powerful, rechargeable
Color: Black
Very impressed with its weight, speed and performance. The dial is great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
C
Verified Purchase
Chief
Birmingham, US
★★★★★ 4
Very nearly the perfect frother for all your basic frothing & mixing needs
Color: Black
There are a lot of middle-of-the-road frothers out there. I've been through a few of them in my recent search for something that could mix and froth well, without taking up any more outlets in my basement kitchen. Of the three Maestri frothers I've tried so far, this one wins the race by a nose. Most recently, these Maestri frothers come in basically three versions: A single-speed @ 8000 RPM, a two-speed @8000/5500 RPM, and this stepless variable-speed version. Aside from that, the only real difference in recent version pack-outs is which attachments they come with. Look over the reviews of the single-speed version and you'll find that while it can and does froth well, it starts at a single, high speed and gets there fast. This makes it pretty easy to spin liquid right out of most common cups and mugs. There is a two-speed version, but it's harder to find, only comes in one color (Grape Purple), and while it's much better than the Maestri single-speed, it still has a couple of quirks that make this variable-speed version win out. This mixes and froths whole milk, half-and-half, or heavy whipping cream, or just about anything else very well. Like all frothers, it takes a little time to learn its nuances and nail down the technique, this will definitely get you there. The best feature of this is easily the speed control. Turn the knob to turn it on at a low speed that's great to get things started, then turn the knob to crank up the speed just enough to do what you need, whether that's mixing or frothing. The low starting speed makes it easy to keep things under control without undue spilling, and the max speed is more than enough to make quick work of getting your froth on. There are really only two complaints I have with this stepless, variable speed version: - I'd really like to have a Press On / Release Off button in addition to the Speed Control knob. More than one time have I gone to turn this off, only to spin the knob the wrong way and crank the speed up to ludicrous, sloshing liquid on the counter. Being able to turn it Off just by letting go of the button would be quick and easy. This configuration would allow using a preferred speed right from the start, while still allowing speed to be adjusted on-the-fly when needed. - Give it a bigger battery. It would cost mere pennies to give this a 2000mAH+ instead of a 1200mAH battery, and I can't think of any reasonable downside to that. - Give the motor a little more torque. It's fairly easy for the current motor, at any speed, to get bogged down in a thick protein powder mix, or when pressing the frother or other attachment a bit too hard into the bottom or side of the frothing container. A bit more "oomph" would prevent that. I really like the overall design and features of thes Maestri frothers better than many other, cheaper versions. This variable-speed version is pretty great as it is and probably the one I would recommend over the single- or two-speed, for most people. But I often find myself using two hands -- one to hold it steady, and the other to turn it on and tweak the knob to the desired speed(s) -- for a device that should arguably need only one hand to use. Just a couple of minor tweaks as noted above would make this the overall best frother of its type that I've used.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2025
D
Verified Purchase
D. Smith
Los Angeles, US
★★★★★ 5
Hands down, the BEST handheld frother I've ever used!
Color: Black
Hands down, the BEST handheld frother I've ever used! I got the black one, but any color will have the same results. Over the past 12 years or so, I've used so many different handheld frothers and they've ALL fallen short of expectations for quality, longevity, power, features, and usability. I've used everything from cheap, $15 models to $50+ models and everything in-between. Some with fancy attachments for various types of mixing, frothing, beating, whipping, etc. Some with rechargeable batteries, some without. Some AC powered, some with fixed whisks, some with detachable/replaceable whisks, some with stands, etc. NONE have been spectacular. Most broke within 6 months and got tossed. ALL were major disappointments in the end, including the "revered" Zulay models of which I tried several. I finally found this Maestri House branded, variable speed frother with detachable / replaceable whisks and got one to try. I was literally on Cloud Nine the first time I turned it on. Like, WOW! Not only was it FAST on the highest speed, but it was powerful enough to churn right through milk, eggs, cream, etc, without bogging down like many others. This thing makes milk froth like a milkshake and Matcha Lattes like nothing else I've ever experienced. I used to have to sift my Matcha, then whisk it in hot water, then froth milk and then blend them together to make the perfect latte. and if the milk was cold (my preference), pre-whisking in hot water was a must to avoid lumps. However, with THIS frother? I literally pour my milk into a tall tumbler, drop in un-sifted Matcha powder, and spin up the Maestri House frother at first on a medium low speed to get it mixed, then jump straight to the highest speed to really whip that milk and match up. After about 30-45 seconds, I've got the thickest, richest, smoothest, most aerated latte around. And NO LUMPS at all!!! What a time and dish saver! And cleaning? I just run it under hot running water to get the shaft cleaned and then spin it up in a dish with hot running water for a few moments, then spin it on high for a few seconds in the air to dry it off instantly. Now, I'll be honest here, too. The specs say it can go months on a charge, using it for a couple minutes a couple times daily. Well, I guess it could do that and still spin. But I use it FULL SPEED, churning hard for at least a minute a couple times per day. After about 2 weeks, I can start to notice a speed reduction so I just plug it back in on the charger. All things considered, this is still better than all the other handheld frothers I've used over the years. After using the heck out of this thing for the past 7 months, I've even decided to start selling these in our Japanese gift shop. The manufacturer is has been very responsive both in customer support (I called them about an issue I thought I was having, and they called me back with a couple hours even though I didn't leave voicemail when they didn't answer right away) and in reseller support. I have to give these guys an A+ for responsiveness and quick resolution when problems might arise. HIGHLY recommended!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 17, 2025
H
Verified Purchase
Hawaii Keith
Belleville, US
★★★★★ 5
Great Addition!
Color: Black
Why did you pick this product vs others?: I just started a powdered drink routine recently and was having a difficult time mixing it with water. I would consistently end up with small nuggets of mix making it unenjoyable to drink. I knew I needed a mixer and was glad I found this device when I did. It works perfectly! I like the fact that it comes with its own stand and included two mixing heads. It is solid, well-designed, and you can feel the quality when you pick it up. The variable speed of the mixer is perfect for ensuring that everything is blended well. I haven’t used it to “froth” anything yet, at least not on purpose, but I accidentally found out that it can do that well. This is a great addition to our kitchen and is very easy to wash after use. So far…no issues. Highly recommend for those of you looking for the right tool to make sure those protein mixes aren’t full of unmixed nuggets.  
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 21, 2025

recommand products