PIONEER SM-70 SM700 Stereo Power Amplifier 20+20W RMS Vintage 1969 WORK GoodLook
PIONEER SM-70 SM700 Stereo Power Amplifier 20+20W RMS Vintage 1969 WORK GoodLook
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PIONEER SM-70 SM700 Stereo Power Amplifier 20+20W RMS Vintage 1969 WORK Good Look
Original item made for the japanese market, original in 100 volts, but it is prepared with to external transformer to work in Europe, uk and australia on 220/240 volts
Condition Like New from Collection, Works Perfect Without Any Problem.
🇬🇧 Pioneer SM-70 / SM-700 — Vintage Power Amplifier (1969–1972)
Compact 300 mm Series • Pure Power • Precision Japanese Engineering
Rare and collectible stereo power amplifier from Pioneer’s legendary 300 mm Compact Series, designed to match the SC-70/700 preamplifier and SR-202 reverb.
The SM-70 (Japan) and its export version SM-700 share the same circuitry, offering pure, clean output power with very low distortion and the refined industrial design of early-1970s Pioneer craftsmanship.
🔹 Technical Specifications
• Production Years: circa 1969 – 1972
• Model: SM-70 (Japan) / SM-700 (export version)
• Type: Stereo power amplifier
• Continuous Power Output: 20 W + 20 W (RMS, 8 Ω, both channels driven)
• Music Power: 30 W + 30 W (max)
• Total Harmonic Distortion (THD): < 0.1 % @ 1 kHz, rated output
• Frequency Response: 10 Hz – 70 kHz ( +0 / –1 dB )
• Input Sensitivity: 0.5 V / 100 kΩ
• Signal-to-Noise Ratio: 90 dB (line)
• Damping Factor: 30 @ 8 Ω
• Speaker Outputs: 4 Ω – 16 Ω (stereo A pair)
• Power Supply: 100 V AC (SM-70 Japan) / 117–240 V AC selectable (SM-700 export)
• Power Consumption: 70 W
• Dimensions (W × H × D): 300 × 115 × 254 mm
• Weight: ≈ 5.2 kg
🎛 Features & Highlights
• Compact 30 cm-wide chassis — designed to stack perfectly with SC-70 / 700 and SR-202
• Elegant brushed-aluminium front panel and classic toggle switches
• Independent left/right level controls
• Solid toroidal power supply and robust output stage
• Excellent partner for high-efficiency vintage loudspeakers
This amplifier combines musical warmth, compact elegance and reliability — a perfect piece for collectors and connoisseurs of early Pioneer engineering.
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🇪🇸 Pioneer SM-70 / SM-700 — Amplificador de Potencia Vintage (1969–1972)
Serie Compacta 300 mm • Potencia Pura • Ingeniería Japonesa de Precisión
Raro y altamente coleccionable amplificador de potencia estéreo perteneciente a la serie compacta de 300 mm de Pioneer, diseñado para combinar con el preamplificador SC-70/700 y el módulo de reverberación SR-202.
El SM-70 (versión japonesa) y su gemelo SM-700 (versión de exportación) comparten idéntico diseño interno, ofreciendo potencia limpia y controlada, con un sonido cálido y natural propio de la época dorada del audio analógico.
🔹 Especificaciones Técnicas
• Años de Fabricación: aprox. 1969 – 1972
• Modelo: SM-70 (Japón) / SM-700 (exportación)
• Tipo: Amplificador de potencia estéreo
• Potencia Continua (RMS): 20 W + 20 W (8 Ω, ambos canales)
• Potencia Musical Máx.: 30 W + 30 W
• Distorsión Armónica Total: < 0,1 % a 1 kHz, potencia nominal
• Respuesta en Frecuencia: 10 Hz – 70 kHz ( +0 / –1 dB )
• Sensibilidad de Entrada: 0,5 V / 100 kΩ
• Relación Señal-Ruido: 90 dB (línea)
• Factor de Amortiguamiento: 30 @ 8 Ω
• Salidas para Altavoces: 4 Ω – 16 Ω (par estéreo A)
• Alimentación: 100 V AC (SM-70) / 117–240 V AC seleccionable (SM-700)
• Consumo: 70 W
• Dimensiones (An × Al × Pr): 300 × 115 × 254 mm
• Peso: ≈ 5,2 kg
🎛 Características Destacadas
• Diseño compacto de 30 cm de ancho — combina perfectamente con SC-70 / 700 y SR-202
• Panel frontal de aluminio cepillado con conmutadores metálicos de alta calidad
• Controles de nivel independientes para canal izquierdo y derecho
• Fuente de alimentación robusta y etapa de salida sobredimensionada
• Ideal para altavoces vintage de alta eficiencia
Un amplificador con carácter, precisión y elegancia: potencia moderada pero sonido extraordinariamente musical, fiel al espíritu de Pioneer de finales de los 60.
Compatible with :
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