MASTER Edition FM801 Amplifier - 8 Key Upgrades
(All specifications subject to technical verification)

Premium Components
◉ 28x Matched ON Semiconductor MJL4281 Output Transistors (Group-matched ≤1%)
◉ Upgraded Binding Posts & RCA Terminals
◉ Single Crystal Copper Signal Wiring
◉ Schurter IEC Inlet & 5x Gold-Plated Fuses
◉ Metal Film Resistors
◉ Enhanced Testing Protocols

Circuit Design Features
▶ Faithful FM Acoustics Core Circuit Topology
▶ Fully Independent L/R Channel Design (Zero Crosstalk)
▶ Optimized Layout Exceeding OEM Stability - Background Noise: Unmeasurable
▶ Dual Inputs: XLR Balanced + RCA Single-Ended (Relay-Switched)

Construction & Materials
♦ 16x Precision-Matched (<1%) TO-3 Metal Can Transistors (2N3440/2N5416)
♦ Custom-Selected MJL4281 Transistors (Screened from 1000+ units)
♦ Individual Decoupling Caps per Output Transistor
♦ 1200VA Niigata Seisakusho Toroidal Transformer
♦ Independent Secondary Windings per Channel
♦ 120,000μF ELNA FOR AUDIO Capacitor Bank
♦ Soft-Start Circuitry & Speaker Protection
♦ CNC-Machined Aluminum Chassis

Technical Specifications

Parameter	Value
Input Impedance	18kΩ
Damping Factor	≥500
Output Power (RMS)	250W @ 8Ω / 500W @ 4Ω
Idle Power Consumption	110W
Voltage	AC 110V/220V (Switchable)
Chassis Finish	Full Silver / Full Black
Net Weight	22kg / 48.5 lbs
Gross Weight	(Packaged) 26kg / 57.3 lbs
Chassis Dimensions	450×155×390mm (W×H×D)
Packaging Dimensions	550×260×500mm

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APx555 Test Validation
(8Ω Load Conditions)

Test Metric	Performance
Output RMS Voltage	45.7V
Channel Gain	31.7dB (38.6×)
Signal-to-Noise Ratio	124dB (A-wtd)
Dynamic Range	124dB
THD	0.0016%
THD+N	0.0021%
Frequency Response	±0.014dB (20-20kHz)

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Quality Assurance
✔️ Full APx555 Sweep Tests per Unit:

• Bandwidth · Noise Floor · Dynamic Range
• THD/IMD · Channel Separation · Gain
  ✔️ 72-Hour Burn-in Minimum
  ✔️ Final Validation:
• 8Ω Full-Power Stress Test: 60min
• Critical Listening Evaluation: >60min