SKU: 83012454335

Henry Engineering THE MATCHBOX HD - Stereo Level Matching Interface/Amplifier

Sale price$29799.00 Regular price$33110.00
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Description

Henry Engineering THE MATCHBOX HD - Stereo Level Matching Interface/AmplifierThe Henry Engineering Matchbox HD is a professional grade analog level and impedance converter, serving as an interface between consumer and professional audio equipment. The Matchbox HD is a bi directional unit, employing four independent amplifiers to convert stereo inputs and outputs from unbalanced 10 dBv levels to +4 dBm balanced 600 ohm lines. All four outputs are adjustable, accomodating a wide variety of operating levels. The Matchbox HD also

The Henry Engineering Matchbox HD is a professional grade analog level and impedance converter, serving as an interface between consumer and professional audio equipment.

The Matchbox HD is a bi-directional unit, employing four independent amplifiers to convert stereo inputs and outputs from unbalanced -10 dBv levels to +4 dBm balanced 600 ohm lines. All four outputs are adjustable, accomodating a wide variety of operating levels.

The Matchbox HD also features a HI GAIN mode to properly match the low-level unbalanced outputs of computer sound cards. The unit's direct-coupled circuitry, and wide dynamic range, provides the sonic transparency, fidelity and level required by the digital editors, DAT's, Hard Disk, Flash Card recorders, and other digital audio sources with which it is meant to interface. The unit has an internal power supply, and 3 units may be rackmounted in a single rack tray, or individually wall and cabinet mounted.

Bi-directional, professional stereo level and impedance matching interface for consumer and professional audio gear
Eliminates hum, buzz, and distortion associated with mismatched levels and impedances
4 independent amplifiers with individual output level trims
Unique HI GAIN mode designed specifically to match low-level, unbalanced outputs from computer sound cards
Extended dynamic range, high operating headroom
Solid, all-metal housing with internal AC power supply
1/3 RU rackmount, wall and cabinet mounting options available
UPC: 837654309070
Dynamic Range 122 dB(Balanced)
125 dB(Unbalanced)
Signal-to-Noise Ratio 100 dB
Balanced: -100 dB ref. +4 dBu
Unbalanced: -95 dB ref. -10 dBv
Maximum Input Level Not Specified by Manufacturer
Maximum Output Level Balanced In to Unbalanced Out: +20 dBv
Unbalanced In to Balanced Out: +26 dBu
Input Connectors 2 x 3-pin XLR Female, L, R
2 x RCA Phono, L, R
Output Connectors 2 x 3-pin XLR Male, L, R
2 x RCA Phono, L, R
Input Impedance IHF: 10 kOhms, HI GAIN 5 kOhms
PRO: 20 kOhms
Output Impedance IHF: 2 kOhms, Unbalanced
PRO: 600 Ohms, Balanced
Dimensions 5.7 x 1.65 x 5.6" (144.8 x 41.9 x 142.2mm)
Weight 2.5 lb. (1.13 kg)
Packaging Info
Package Weight 2.2 lb
Box Dimensions (LxWxH) 8.661 x 6.221 x 2.126"
In the Box
Henry Engineering THE MATCHBOX HD - Stereo Level Matching Interface/Amplifier
  • 1 Year Warranty
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
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: 83012454335

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4.7 ★★★★★
Based on 7 reviews
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Verified Purchase
CL Lucas
Massapequa, US
★★★★★ 5
My Dogs Fought Over These!
Size: Large, Color: 6 Packs, Size: Large, Color: 6 Packs
Pack of 6. I specifically ordered a pack of them so each dog would have their own. They still fought over them. lol I only see two of them now because they have hid them from each other. So far, they are holding up well. Heavy enough to toss to them but light enough not to hurt them. Loved the variety of colors. Only issue I have is they are a little small for my mastiff but still giving it 5 stars because the ad stated it was for medium dogs.
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Reviewed in the United States on March 11, 2026
K
Verified Purchase
Kindle Customer
Cuba, US
★★★★★ 4
Great selection
Size: Large, Color: 9 Packs
They're not as big as advertised but they worked for what I wanted
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Reviewed in the United States on May 28, 2026
D
Verified Purchase
Duval Chad
Boise, US
★★★★★ 5
Pawesome variety box!
Size: Large, Color: 9 Packs, Size: Large, Color: 9 Packs
I’m a big fan of this box of tug toys. My dog loves to chew and play tug-of-war, and these have been a great fit for him. The quality is solid, and one box typically lasts us around 6 months. He’s now 3.5 years old, so he doesn’t chew as aggressively as he used to, which helps them last even longer. You get a great variety in this box. It’s honestly like Christmas for him every time I bring out a new toy. I usually grab a couple and let him pick. The different shapes and sizes keep things interesting, and he enjoys all of them. The toys are lightweight but very durable, even for an aggressive chewer like mine. The material is made of thinner rope strands, but they’re tightly woven, which makes them ideal for both tugging and chewing. I also think the texture helps with his teeth and keeps them a bit cleaner. I do keep an eye on them once they start to unravel, since I don’t want him swallowing loose strings. That said, it takes a while for him to break them down, so I’m comfortable leaving them with him when I’m not home. I’ve bought several of these boxes over the years. For the price, it’s a great value—about the same cost as a single tug toy at most pet stores. My dog is about 55 lbs, and these are a great size for him. Even the smaller ones get a lot of use. His favorites are the looped ones and the ones with balls—he gets excited every time I pull one out. I’ve tried other tug toy variety packs, and they don’t compare to this one. If you’re looking for a reliable variety pack for your dog, I’d recommend this one with confidence.
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Reviewed in the United States on May 1, 2026
T
Verified Purchase
Tabetha Dawn Justo
Lowell, US
★★★★★ 3
Revenge is sweet
Size: Large, Color: 14 Packs
The package arrived promptly. The puppy was ecstatic. She leaped into the pile of toys and went crazy. She tore through one after another. In mere minutes she devoured everything in sight. They never stood a chance. Within an hour or two she had consumed the entire pile of toys. Not to worry they had their revenge. She puked multi color string for days. Overall the toys were fun just not durable.
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Reviewed in the United States on June 7, 2026
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Verified Purchase
Wrench01543
Draper, US
★★★★★ 5
Very very durable
Size: Large, Color: 9 Packs
So after spending quite a bit of money on toys for a 1-year-old long-haired dachshund because she's a very aggressive chewer I took a chance and bought this rope set and it's been 2 months she still has all her ropes everything I must say this is a very durable set well worth the money well worth the play time she loves tug of war these ropes are great for tug of war she has not chewed through any of them she has tried to take them apart which she had succeeded on one but I put a few knots in it and other than that I would recommend this rope set to anyone that's got a dog that likes the fat especially play tug of war or is a very very aggressive sure
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Reviewed in the United States on May 14, 2026

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