Marantz Vintage 1070 Integrated Amp

Marantz 1070 — Pre-Main Integrated Amplifier (Vintage)

🔧 Design & Circuit Features

• Pre-main integrated amplifier design

• Uses Marantz traditional inverting Darlington amplifier circuit

• Preamp and power amp sections can be separated and used independently

• Tone control section with midrange control

  • Independent adjustment of low, mid, and high frequencies

• Speaker matrix circuit

  • Allows connection and playback of four speakers (4-channel speaker matrix)

• Output transistor protection circuit (PEP)

  • Protects output stage against overload and fault conditions

• Optional accessories (sold separately):

  • Walnut cabinet

  • Rack-mount adapter

🔊 Rated Performance

• Rated output power:

  • 40 W + 40 W into 8 Ω

  • 20 Hz – 20 kHz, both channels driven

• Frequency response:

  • 20 Hz – 20 kHz (±1 dB)

• Total harmonic distortion (THD):

  • ≤ 0.3% (20 Hz – 20 kHz)

• Cross-modulation distortion:

  • ≤ 0.3% (20 Hz – 20 kHz)

• Damping factor:

  • ≥ 40 (8 Ω load)

🎚 Gain Structure

• Phono → Pre-out: 55 dB

• Phono → Rec-out: 40 dB

• High-level → Pre-out: 15 dB

🔌 Inputs & Electrical Characteristics

Input Impedance

• Phono / Mic: 47 kΩ

• High-level inputs: 100 kΩ

Input Sensitivity

• Phono (MM): 1.8 mV

• Aux / High-level: 180 mV

Phono Noise Performance

• Equivalent input noise:

  • ≤ 1.5 μV (input-referred)

🎛 Filters

• High-cut filter: 10 kHz

• Low-cut filter: 50 Hz

⚡ Power Requirements

• Power supply:

  • 100 VAC, 50/60 Hz

• Power consumption:

  • 190 W

📐 Physical Specifications

• Dimensions (W × H × D):

  • 360 × 120 × 280 mm

• Weight:

  • 8.4 kg