CHUBAN Reference Accuphase E-406 Line Class A and B High Power 320W*2 Pure Post-stage Amplifier Home HiFi Fever Audio

E-406 Technical Parameters
Rated continuous output power (20HZ-20,000HZ)
1: 180W/8 ohm output
2: 320W/4 ohm output
2: Frequency response
Continuous rated output 20-20,000HZ+0-0.2db
1W output 0.5-160,000HZ+0-3 db
3: S/N signal-to-noise ratio full band 120dB
4: Input impedance: 40K (balanced input), 20K (RCA input)
5: Input sensitivity: (0.87V rated continuous average output
0.11V output 1 watt power
6: Distortion: 0.005%
7: Amplification 28dB
8: Overall size: 430W×K160H×430Dmm
9. Weight: 21KG

 The internal layout is neat and orderly, and the materials are clear at a glance.

1: The entire unit uses 24 ON Semiconductor NJW0281G high-power transistors, producing a beautiful and pleasant sound.
2: Adopt MUSMYS customized super large pond 320,000 microfarad capacitors, far exceeding similar products.
3: Adopt 850 watt whole strip steel sheet, large twill iron core, pure copper winding, far beyond the ordinary transformer.
4: Adopt the latest American technology third-generation AC purification technology to isolate the dirt in the city power from the source.
5: Adopt the latest generation of power soft start to ensure stable operation at startup, because our power capacity is very large, which is not comparable to ordinary power amplifiers. The 320,000 microfarad capacitor will reach 160A instantly when charged.
6: Adopt the left and right channels with completely symmetrical and completely independent power amplifier boards, which greatly improves the sound separation.
7: Adopt NEC signal relay to switch the sound source signal purely mechanically, reject sound coloration, adopt 2 Omron 16A ultra-large current relays as speaker protection, one for each left and right channel is separated independently to protect your expensive speakers.
8: Adopt 2 sets of speaker terminal output, the speaker can be bi-wired, group A is connected to mid-high frequency, group B is connected to bass, and the potential of the speaker is fully tapped.
9: Adopt Taiwan pure copper speaker terminal, which can greatly improve the damping coefficient of the power amplifier and enhance the strength.
10: Adopt dual head dynamic display, retro and charm coexist, and the logical calculation method is more natural.
11: The all-aluminum chassis highlights the high-end atmosphere, and the internal iron frame makes the chassis more solid and eliminates resonance

The MUSMYS E-406 pure power amplifier is more than just a high-power Class AB amplifier; it also functions as a pure Class A amplifier at low to medium volumes. It can output 60 watts of Class A power at 4 ohms and 30 watts at 8 ohms, much like the once-popular Marantz PM90. However, while the Marantz’s Class A output was only 20 watts, don’t underestimate our 30-watt Class A output. Consider that the 845 single-ended tube’s Class A output power was only 15 watts, yet it still produced a deafening sound. Moreover, we have a reserve of Class AB power. When a high dynamic range arrives, it automatically switches to a 320-watt 4-ohm output, easily handling a pair of 12-inch speakers.

MUSMYS The E-406 pure power amplifier also caters to experienced audiophiles by providing two sets of speaker binding posts. You can connect two pairs of speakers simultaneously or use a bi-wiring system. Group A can be connected to the mid-high frequencies of the speakers, while Group B can be connected to the bass frequencies. You can use different cables to achieve the sound you want and squeeze out every last bit of potential from your speakers.