Highlights

1. High-Power Output Stage

   • 24x German IXYS Essex MOS field-effect transistors (30A/450W each), outperforming Toshiba/Onsemi equivalents.

2. Premium Capacitors

   • Custom MUSMYS 320,000μF capacitor bank ("super pond"); exceeds industry standards.

3. Robust Transformer

   • 850W monolithic steel-core transformer with pure copper windings; superior to conventional units.

4. Signal Purity

   • 3rd-gen U.S.-developed AC power purification tech: isolates mains interference at source.
   • Next-gen soft-start circuit: enables stable high-capacity power-up.
   • Note: Capacitor recharge peak: 160A.

5. Channel Separation & Protection

   • Fully symmetrical, independent L/R amplifier boards: enhanced stereo imaging.
   • Signal switching: 2x NEC mechanical relays (prevents sound coloration).
   • Speaker protection: Dual Omron 16A relays (L/R independent).

6. Speaker Optimization

   • Bi-wire terminals: Group A (mid/high), Group B (low) for full driver potential.
   • Taiwanese pure-copper terminal posts: increased damping factor + power control.

7. Design & Chassis

   • Dual Vu-meters: logic-driven dynamics (retro-modern aesthetic).
   • Full aluminum enclosure with internal steel frame: eliminates resonance; rugged construction.

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E-406 Specifications

Parameter	Value
Output Power
- Class A (4Ω)	60W × 2
- Class A (8Ω)	30W × 2
- Class AB (4Ω)	320W × 2
- Class AB (8Ω)	180W × 2
Frequency Response
- 1W output	0.5Hz–160kHz (+0/-3dB)
- Rated output	20Hz–20kHz (+0/-0.2dB)
Signal-to-Noise	120dB (full bandwidth)
Input Impedance	40kΩ (XLR), 20kΩ (RCA)
Input Sensitivity	0.87V (rated), 0.11V (1W output)
THD	0.005%
Gain	28dB
Dimensions (W×D×H)	430 × 430 × 160 mm
Weight	24kg