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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]
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4.8 ★★★★★
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Product Reviews
★★★★★ 4
Great resource for authors
Format: Kindle
The book offers a variety of helpful tips from running your own business, filing types, inventory, taxes, and more. I will be referencing it again as it has so much information that I need to look back on.
I received an advance review copy for free, and I am leaving this review voluntarily.
Two issues with the book:
1) Parts of the book sounded like AI. Words like crucial, labyrinth, and the extensive use of bullets left me somewhat suspicious. It’s not a huge deal as it was heavily edited but was noticeable.
2) Formatting of some parts were in all bold which was hard to read. Entire bulleted sections were all bolder instead of just the first sentence. It needed to be updated and I think this was missed.
The book is helpful and a good resource despite these two issues. I appreciated the vast amount of information provided which will be beneficial in the future.
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Reviewed in the United States on January 5, 2025
★★★★★ 5
Good tips for a tax effective life
Format: Kindle
A good outline of how to go about setting up your life in a tax effective way. Worth the read.
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Reviewed in the United States on December 12, 2024
★★★★★ 5
Great and swirl capability and keep warm
Color: White
Love the bottle warmer like that it rotates very affordable . Used with water has keeping warm capability and has a tiny night light wish it was bigger . Can be used for traveling since compact and don’t want to buy a portable one . Just dump water very durability seems like it’ll last you a while but having it for a few months now . Cord I will say a bit short
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Reviewed in the United States on October 10, 2025
★★★★★ 5
Great!
This is a great bottle warmer with multiple options for heating. It works great and heats a 4 oz. bottle on the "quick" setting in a little over 3 minutes depending on how warm you desire the milk to be. The gentle spinning action keeps any portion of the milk from overheating. I am very happy with this product.
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Reviewed in the United States on July 16, 2025
★★★★★ 4
Works, but more desired features wanted
Works well. Love the “shake” feature compared to the last one I had. It actually moves the formula inside of it by spinning the bottle, and to keep it would make the formula heat up faster.
Instructions leave a little to be desired for. Not super clear but you can figure it out.
However I can’t seem to get it to state how much time is remaining, which could be frustrating with a screaming baby in your arms.
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Reviewed in the United States on March 9, 2025