Nikko Alpha 230 Dark Red Faceplate | Serviced Power Amp | 120 WPC | Japan

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The Nikko Alpha 230 Dark Red Faceplate is a vintage power amplifier from Japan, known for its high power output of 120WPC. This serviced amplifier is a classic piece of vintage audio equipment that offers superior sound quality and performance. With its sleek design and powerful capabilities, this Nikko amplifier is perfect for audiophiles looking to enhance their audio experience with a piece of history from Japan.

📐 Core Specifications

• Power Output — 120W per channel into 8Ω (stereo)

240W total undistorted output (Radiomuseum listing) Radiomuseum

• Frequency Response — 0Hz to 100kHz (DC‑to‑wideband)

• Total Harmonic Distortion (THD) — 0.008%

• Damping Factor — 70

• Input Sensitivity — 1V for rated output

• Signal‑to‑Noise Ratio (S/N) — 115dB

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⚡ Electrical & Power

• Power Supply Types• W‑Type (UL/CSA) — 120V AC, 60Hz, 480W consumption

• E‑Type (NK‑STD) — 220V AC, 50Hz, 720W consumption

• B‑Type (BS) — 240V AC, 50Hz

Radiomuseum

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📏 Physical

• Dimensions — 440 × 138 × 344 mm (HiFi Engine)

Radiomuseum lists a slightly different width: 482 × 138 × 344 mm

• Weight — 13.5 kg (≈ 29.7 lb)

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🛠️ Design Notes

• Fully discrete power amplifier topology

• High‑fT output transistors

• Non‑switching bias circuit

• DC servo circuit

• LED indicators for thermal and protection states

ManualsLib

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🗂️ Production

• Years Manufactured — 1984–1987

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