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.
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