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Description
audison AF M4DAF companion amplifiers are designed to add powerful amplifier channels to AF bit processor amplifiers. A plug and play signal input harness is included to make connection to AF bit amplifiers straightforward. AF companion amplifiers are also perfect for use with systems controlled and managed by a standalone bit processor, such as a bit One HD Virtuoso. AF companions have a straight wire architecture, without analog preamp functions such as crossover
AF companion amplifiers are designed to add powerful amplifier channels to AF bit processor amplifiers. A plug-and-play signal input harness is included to make connection to AF bit amplifiers straightforward. AF companion amplifiers are also perfect for use with systems controlled and managed by a standalone bit processor, such as a bit One HD Virtuoso. AF companions have a “straight wire” architecture, without analog preamp functions such as crossover filtering, and are intended for use with external processors. AF M4D boasts four high-fidelity amplified channels 160W x 4 @4?*, 260W x 4 @2?* with the audiophile sound of the latest generation Audison D-Class technology. Higher switching frequencies, steeper filtering, and higher-tolerance components deliver sound above and beyond the expectation of Class D – in an amazingly compact package! The audio band is extended up to 40 kHz earning the coveted High-Resolution certification. Bridging channel pairs results in 520W x 2 @4?*, guaranteeing flexible and powerful performance.
*Output Continuous Power (RMS) @14.4 VDC, 1% THD, all channels driven.
*Output Continuous Power (RMS) @14.4 VDC, 1% THD, all channels driven.
Amplifier Tech Data
| Channels | 4 |
| Class | D-Class |
| Efficiency | 83 % |
| Hi Level Input | Yes |
| Low Level Input | Yes |
| Digital Input | No |
| Power supply voltage / fuse | 11 ÷ 15 VDC |
| Operating power supply voltage | 6.5 ÷ 17.5 VDC |
| Idling current | 1.12 A |
| Idling current when off | 0.007 mA |
| Consumption @ 14.4 VDC, 2?, Max Musical Power | 47 A |
| Remote OUT | 6.5 ÷15 VDC (150 mA) |
| Remote IN | 4 ÷15 VDC (1 mA) |
| ART - Automatic Remote Turn on/off from OUTPUT BTL speakers (Selectable) | 1.5 VDC |
Amplifier Stage
| Distortion - THD @ 100 Hz, 4?, 70% Rated Power | 0.05% |
| Bandwidth A | (-3 dB, 2 VRMS, 4 ?): 10 Hz ÷ 42 kHz |
| S/N ratio A | (A weighted @ 1 V): 103 dBA |
| Input sensitivity Pre-In | 0.6 ÷ 6 VRMS |
| Input sensitivity Speaker-In | 2.2 ÷ 22 VRMS |
| Total Power RMS | 1040 W |
| Minimum load impedance |
4 Ch 2? 2 Ch - (Bridge) 4? |
| Output Power (RMS) @14.4 VDC, 1% THD |
4Ch @ 4?: 160 W x 4 4Ch @ 2?: 260 W x 4 2Ch (Bridge 1/2; 3/4) @ 4?: 520 W x 2 |
| Adjustable Crossover | No |
CEA Specifications
| Output power @ 4?, 1% THD+N, 14.4 V | 150 W x 4 |
| SN ratio (ref. 1W output) | 80 dB |
Inputs
| Input Type | Pre-In / Speaker-In |
| Remote Sub Volume | ±12 dB |
Other
| Fuse | 2 x 30A |
| Weight | 2.04 kg |
Features
- Improved audio performance and power thanks to the latest generation of ADT (Audison D-Class) technology
- Unbeatable power/volume ratio up to 0.68 W RMS/cm³ reaching 83% of efficiency
- Hi-Res compatibility performance, with an extended audio band up to 40 kHz
- Maximum versatility thanks to the possibility of using the bridging option for each pair of power outputs
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
4.8 ★★★★★
Based on 598 reviews
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Product Reviews
★★★★★ 2
Good throw, bad ball
Ball cracked open after first fetch.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Good play!!!
Great item 😊
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Reviewed in the United States on February 6, 2026
★★★★★ 3
Too small
Much smaller than it appeared to me in the picture. I did not read the length as I should. I would not have bought it if I saw it before purchasing. My 18 month old grandson now has a new toy.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Really great ball
Our yo German Shepard loves this ball. She can get hold of it on all sides. Really a tough toy. Hasn’t chewed it up. Loves to toss it herself.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Brilliant Ball
This is my dog, Sunnie, favorite toy besides a mostly flat basketball. The toy has some weight to it, but it isn’t too heavy for her (she’s a husky mix, maybe 25lbs and is 6-months old). The ball is the perfect size for medium and large dogs, has a lot of bounce, and is easy for Sunnie to pick up with her mouth because the open holes. The quality is good, worth more than it costs. It’s easy to clean. I’d buy many more, but this ball seems like it’ll last a lifetime.
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Reviewed in the United States on May 14, 2026