Product Description

Imitation of Classic British QUAD606 / QUAD707 Stereo Post‑Amplifier Finished Machine, a high‑fidelity power amplifier built for audiophile music lovers. Fully assembled, tested and integrated with power transformer, speaker protection circuit and delay‑start function, ready‑to‑use for your home Hi‑Fi audio system.

Main Specifications of Complete Amplifier Chassis

• Stereo Output Power: 130W × 2 @ 8Ω

• Built‑in 300VA Pure Copper Power Transformer, stable and sufficient power supply

• Speaker Protection Circuit & Power‑on Delay Startup Function, effectively protect your speakers from surge damage

• Volume Control: Original Japanese ALPS 27 Potentiometer, smooth adjustment, low noise and long service life

• Overall Dimension (W × H × D): 240mm × 120mm × 271mm

✅QUAD606 Finished Post‑Amplifier

High‑fidelity finished mono power amplifier board, classic QUAD606 circuit, excellent for DIY audiophile audio system, home theater, speaker upgrade project. Built and fully tested, ready‑to‑use, no soldering work required.

Key Features

• Wide DC dual‑rail power supply: ±25V~±55V DC, Recommended working voltage: ±45V DC

• Powerful output: 125W @ 8Ω, 250W @ 4Ω per channel

• Ultra‑low distortion: THD+N ＜ 0.01%, delivers transparent, warm and detailed sound performance

• Professional‑tested frequency response (APSYS2): 20Hz‑0dB, 10Hz‑0.3dB, 10kHz‑0.1dB, 20kHz‑0.3dB; Slew‑rate:25V/μs (Oscilloscope tested)

• Fixed gain: 51.5 times

• Output stage quiescent current: 0mA; Mono static current: approx.100mA

• Premium components: Original TLC271 high‑performance operational amplifier; 6pcs 2SD718 (140V, 10A,100W) power transistors per channel

• PCB + corner aluminum heatsink mounting size: 90mm × 100mm

• Cooling suggestion: Single‑channel radiator weight ≥ 500g (under ±45V)

Notice: Heatsink is NOT included. You need to prepare extra qualified radiator for long‑time stable operation.

✅QUAD707 Finished Post‑Amplifier

High‑end finished mono HIFI power amplifier, classic QUAD707 circuit design, perfect upgrade solution for audiophile home audio setup. Pre‑assembled & well‑tested, plug‑and‑play after power supply and speaker connection.

Key Features

• Wide DC dual‑rail power supply: ±25V~±55V DC, Recommended working voltage: ±45V DC

• Powerful output: 125W @ 8Ω, 250W @ 4Ω per channel

• Ultra‑low distortion: THD+N ＜ 0.01%, clean audio output, restore real music details

• Professional‑tested frequency response (APSYS2): 20Hz‑0dB, 10Hz‑0.3dB, 10kHz‑0.1dB, 20kHz‑0.3dB; Slew‑rate:25V/μs (Oscilloscope tested)

• Fixed gain: 51.5 times

• Output stage quiescent current: 0mA; Mono static current: approx.100mA

• Premium components: Original TLC271 high‑performance operational amplifier; 6pcs 2SD718 (180V, 10A,100W) power transistors per channel

• PCB dimension: 50mm × 145mm

• Cooling suggestion: Single‑channel radiator weight ≥ 500g (under ±45V)

Notice: Heatsink is NOT included. External sufficient‑weight radiator is required to avoid overheating during long‑hour playback.