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Description
audison SR 4.300Audison SR 4. 300 4 channel amplifier with crossover and great power packed into ultra compact dimensions (85 W x 4 4?) SR line, perfected by taking full advantage of the capabilities of the latest amplification devices. After numerous listening tests with professionals and enthusiasts, Audison's R&D team decided to adopt a new class D technology called ADT (Audison D Class Technology) for this line of amplifiers, which has made it possible to
Audison SR 4.300 4-channel amplifier with crossover and great power packed into ultra-compact dimensions (85 W x 4 4?)
SR line, perfected by taking full advantage of the capabilities of the latest amplification devices. After numerous listening tests with professionals and enthusiasts, Audison's R&D team decided to adopt a new class D technology called ADT (Audison D-Class Technology) for this line of amplifiers, which has made it possible to considerably reduce their size, totally preserving the audio performance that characterises every Audison design.
As far as the electronic design is concerned, every aesthetic and functional detail of the Audison SR 4.300 has been taken care of, resulting in a compact amplifier made of extruded aluminium 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.
Audison USS
Thanks to the integration of Audison USS (Universal Speakers Simulator) technology in the high level inputs, the SR amplifiers can also be conveniently connected to OEM sources equipped with the 'speaker load detection' function, which monitors the presence of a low impedance load enabling the audio outputs.
Audison SR 4.300 allows multiple connectivity
All models have balanced high-level inputs for connecting to the OEM headunit speaker output and a low-level RCA for after-market speakers. When using the high-level input, the ART (Automatic Remote On/Off) function can be enabled to control the amplifiers' power-up with the headunit's power button. In addition, there is a remote IN / OUT socket to allow control of multiple amplifiers in cascade that turn on when needed.
Through the PRE-OUT signal using the Speaker-IN socket it is possible to interface the amplifier with OEM sources that only have amplified outputs, allowing for system expansion.
SR line, perfected by taking full advantage of the capabilities of the latest amplification devices. After numerous listening tests with professionals and enthusiasts, Audison's R&D team decided to adopt a new class D technology called ADT (Audison D-Class Technology) for this line of amplifiers, which has made it possible to considerably reduce their size, totally preserving the audio performance that characterises every Audison design.
As far as the electronic design is concerned, every aesthetic and functional detail of the Audison SR 4.300 has been taken care of, resulting in a compact amplifier made of extruded aluminium 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.
Audison USS
Thanks to the integration of Audison USS (Universal Speakers Simulator) technology in the high level inputs, the SR amplifiers can also be conveniently connected to OEM sources equipped with the 'speaker load detection' function, which monitors the presence of a low impedance load enabling the audio outputs.
Audison SR 4.300 allows multiple connectivity
All models have balanced high-level inputs for connecting to the OEM headunit speaker output and a low-level RCA for after-market speakers. When using the high-level input, the ART (Automatic Remote On/Off) function can be enabled to control the amplifiers' power-up with the headunit's power button. In addition, there is a remote IN / OUT socket to allow control of multiple amplifiers in cascade that turn on when needed.
Through the PRE-OUT signal using the Speaker-IN socket it is possible to interface the amplifier with OEM sources that only have amplified outputs, allowing for system expansion.
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 / 1 x 30A |
| Operating power supply voltage | 6.5V ÷17 VDC |
| Idling current | 1.6 A |
| Idling current when off | 0.03 mA |
| Consumption @ 14.4 VDC, 2?, Max Musical Power | 25 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 | 0.03% |
| Bandwidth A | 10Hz ÷ 35 kHz |
| S/N ratio A | 100 dBA |
| Damping factor A | 150 |
| Input sensitivity Pre-In | 0.2 ÷ 5 VRMS |
| Input sensitivity Speaker-In | 0.8 ÷ 20 VRMS |
| Total Power RMS | 520 W |
| Minimum load impedance |
@ 4Ch: 2? @ 3Ch: 2? + 2? + 4? @ 2Ch: 4? |
| Output Power (RMS) @14.4 VDC, 1% THD |
4Ch 85 W x 4 (4?) 4Ch 130 W x 4 (2?) 3Ch 80 W x 2 (4?) + 250 W x 1 (4?) 3Ch 130W x 2 (2?) + 260 W x 1 (4?) 2Ch 250 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: 75 W x 4 Ch |
| SN ratio (ref. 1W output) | SN ratio (ref. 1W output): 82 dBA |
Inputs
| Input Type | Pre-In / Speaker-In |
| Filters Outputs | PRE OUT full range (Input A) |
| Filter Pass A | Ch Filters: - Full Hi-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct. |
| Filter Pass B | Ch Filters: - Lo-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct. |
| Filter Pass C | Ch Filters: - Full Hi-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct. |
| Filter Pass D | Ch Filters: - Lo-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct. |
| Channel Mono | A/B Ch MONO IN (on/off) Yes |
| Inputs/Outputs Bass Boost | B Ch (0 ÷12) dB |
Other
| Weight | 1.56 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.
- 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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Product Reviews
★★★★★ 5
Must have sunscreen for kids!
Style: SPF 50 (Pack of 3), Size: 5.5 Fl Oz (Pack of 3)
This is our favorite sunscreen. It is easy to apply stays on and my kids do not get burned. I have a 9, 8 and 6 year-old we live in Florida and this is the only sunscreen we buy for their body. It does not cause any skin irritation.
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Reviewed in the United States on February 19, 2026
★★★★★ 5
Lightweight and non-greasy
Style: Sensitive Skin, Size: 6 Ounce (Pack of 2), Style: Sensitive Skin, Size: 6 Ounce (Pack of 2)
It doesn’t feel heavy or greasy on the skin, and I really like the scent. It absorbs well and does its job protecting from the sun. I sent these to Cuba, where the sun is very strong, and my mom is really happy with the results. Overall, a great sunscreen.
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Fantastic sensitive skin mineral lotion
Style: Sensitive Skin, Size: 6 Fl Oz (Pack of 2)
Mineral sunscreen is required in Hawaii. They don't allow the chemical variety as they are trying to protect the reefs. The Banana Boat Sensitive 100% Mineral Sunscreen Lotion SPF 50 Twin Pack is a great option for reliable, gentle sun protection. Made with 100% mineral actives, it’s perfect for sensitive skin and provides strong broad-spectrum coverage against UVA and UVB rays. The lotion is lightweight, blends in well without leaving a heavy white cast, and feels comfortable for all-day wear. It’s also water-resistant, making it a dependable choice for outdoor activities. With the value of a twin pack, it’s a smart buy for keeping your skin safe and protected. We used it in Hawaii and it was popular among our crew. It didn't last long!
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Reviewed in the United States on December 21, 2024
★★★★★ 5
On my Safe List from allergist!
Style: Sensitive Skin, Size: 6 Fl Oz (Pack of 2)
I like this product because it is nice and creamy, has no odor, it rubs in easily and it stays on. I need constant sun protection every day and this one seems to provide it, even when boating. I have no itching or irritation of skin or eyes after using. So much better than a sticky spray that feels like a plastic coating when it dries. I am getting better protection with this one, and you don’t feel like you’ve gotta wash it all off at the end of the day. Very happy I tried it, and I’m going to stick with it.
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Reviewed in the United States on July 7, 2024
★★★★★ 4
Dries your skin and leaves a cast, but very effective and dry to the touch
Style: Sensitive Skin, Size: 6 Fl Oz (Pack of 2)
This sunscreen is super effective for preventing sunburn, I think it works for longer than other sunscreens. It’s also completely dry to the touch, it’s the least greasy sunscreen I’ve ever worn in my life. There are drawbacks though, it makes my skin super dry, and it leaves a little bit of a white cast.
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Reviewed in the United States on August 19, 2025
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