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Description
audison SR 4.500The Audison SR 4. 500 4 channel amplifier with crossover features great power packed into ultra compact dimensions (130 W x 4 @ 4?). As far as the electronic design is concerned, every aesthetic and functional detail of the Audison SR 4. 500 has been taken care of, resulting in a compact amplifier made of extruded aluminum with rounded corners, which facilitates the installation of the product in narrow spaces. Thanks to the generous heat sinks on the
The Audison SR 4.500 4-channel amplifier with crossover features great power packed into ultra-compact dimensions (130 W x 4 @ 4?).
As far as the electronic design is concerned, every aesthetic and functional detail of the Audison SR 4.500 has been taken care of, resulting in a compact amplifier made of extruded aluminum with rounded corners, which facilitates the installation of the product in narrow spaces. Thanks to the generous heat sinks on the two short sides of the amplifiers, there is no need for internal cooling fans, which often cause noise and dust accumulation. In keeping with tradition, the SR amplifiers confirm their vocation for versatility by including on all models a complete filter section, suitable for any kind of audio system configuration. The controls, protected by a satin-finished aluminium panel, are located on the top panel of the amplifier, so that they can be easily reached from above, even after the product has been installed. When the system includes an Audison bit processor, the filter section can be totally excluded.
As far as the electronic design is concerned, every aesthetic and functional detail of the Audison SR 4.500 has been taken care of, resulting in a compact amplifier made of extruded aluminum with rounded corners, which facilitates the installation of the product in narrow spaces. Thanks to the generous heat sinks on the two short sides of the amplifiers, there is no need for internal cooling fans, which often cause noise and dust accumulation. In keeping with tradition, the SR amplifiers confirm their vocation for versatility by including on all models a complete filter section, suitable for any kind of audio system configuration. The controls, protected by a satin-finished aluminium panel, are located on the top panel of the amplifier, so that they can be easily reached from above, even after the product has been installed. When the system includes an Audison bit processor, the filter section can be totally excluded.
Amplifier Tech Data
| Channels | 4 |
| Class | D-Class |
| Hi Level Input | Yes |
| Low Level Input | Yes |
| Digital Input | No |
| Power supply voltage / fuse | 11 ÷ 15 VDC / 2 x 25A |
| Operating power supply voltage | 6.5 ÷17 VDC |
| Idling current | 1.7 A |
| Idling current when off | 0.09 mA |
| Consumption @ 14.4 VDC, 2?, Max Musical Power | 40 A |
| Remote OUT | 6.5 ÷ 15 VDC (150 mA) |
| Remote IN | 6.5 ÷ 15 VDC (1 mA) |
| ART - Automatic Remote Turn on/off from OUTPUT BTL speakers (Selectable) | 1.5 ÷ 7 VDC |
Amplifier Stage
| Distortion - THD @ 100 Hz, 4?, 70% Rated Power | 0.08 % |
| Bandwidth A | 10 Hz ÷ 35 kHz |
| S/N ratio A | 105 dBA |
| Damping factor A | 200 |
| Input sensitivity Pre-In | 0.2 ÷ 5 VRMS |
| Input sensitivity Speaker-In | 0.8 ÷ 20 VRMS |
| Total Power RMS | 880 W |
| Minimum load impedance |
@4Ch: 2? @ 3Ch: 2? + 2? + 4? @ 2Ch: 4? |
| Output Power (RMS) @14.4 VDC, 1% THD |
4Ch 130 W x 4 (4?) 4Ch 220 W x 4 (2?) 3Ch 120 W x 2 (4?) + 480 W x 1 (4?) 3Ch 220 W x 2 (2?) + 440 W x 1 (4?) 2Ch 450 W x 2 (4?) |
| Adjustable Crossover | Yes |
CEA Specifications
| Output power @ 4?, 1% THD+N, 14.4 V | Output power @ 4?, 1% THD+N, 14.4 V: 125 W x 4 Ch |
| SN ratio (ref. 1W output) | SN ratio (ref. 1W output): 83 dBA |
Inputs
| Input Type | Pre-In / Speaker-In |
| Filters Outputs | PRE OUT full range (Input A) |
| Filter Pass A | Front Ch Filters - Full Hi-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct. |
| Filter Pass B | Front Ch Filters - Full Lo-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct. |
| Filter Pass C | Rear Ch Filters - Full Hi-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct. |
| Filter Pass D | Rear Ch Filters - Lo-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct |
| Channel Mono | A/B Ch MONO IN (on/off) Yes |
| Inputs/Outputs Sub CH | (-20 ÷ 6) dB |
| Inputs/Outputs Bass Boost | B Ch (0 ÷12) dB |
Other
| Weight | 2.12 kg |
Features
- Elegant and functional design with rounded corners to minimize space, facilitating installation.
- Built-in USS (Universal Speakers Simulator).
- Full built-in crossover section.
- Optional VCR-S1 remote control offers the possibility to adjust the subwoofer level (-20 / + 6 dB) to your musical preference.
- Balanced high-level inputs for connecting to the OEM head unit speaker output
- Low-level RCA for after-market speakers.
- ART (Automatic Remote On/Off) function.
- Remote IN / OUT socket to allow control of multiple amplifiers.
- PRE-OUT allows for system expansion.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
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★★★★★ 5
Great sunscreen
Love this sunscreen… smells great and not sticky at all!
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Reviewed in the United States on March 8, 2026
★★★★★ 4
Good quality skin care
Great sunscreen for sensitive skin.
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Reviewed in the United States on June 4, 2026
★★★★★ 5
Sun-kissed skin
This was the best kit to take to the islands. Loved the fragrance and didn’t burn. (Just follow the directions!)
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Reviewed in the United States on February 21, 2026
★★★★★ 5
Great for sensitive skin
Scent: Fragrance Free, Size: 1.7 Fl Oz (Pack of 1)
I usually have problems with fragrance in almost any face cream or sunscreen, and my skin reacts very easily, so I’m always careful with what I use. I tried the COOLA Organic Face Sunscreen SPF 50 Sunblock Lotion (Fragrance Free) and I’m honestly impressed. It feels very light on the skin, doesn’t irritate my face at all, and finally a sunscreen that doesn’t have that strong smell that usually bothers me. It absorbs well, works great under makeup, and gives good daily protection without feeling greasy. If you have sensitive skin or issues with fragrance like I do, this one is definitely worth trying.
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Reviewed in the United States on March 25, 2026
★★★★★ 5
Love this sunscreen
Scent: Fragrance Free, Size: 1.7 Fl Oz (Pack of 1)
I would love to buy again, but I go through sunscreen, I have to find a little less expensive one. No burn, dewy not greasy look. Great for mature skin. No fragrance, works well, melts right in the skin. I do love this product and the spray too!
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Reviewed in the United States on May 17, 2026