Marantz Rare Audiophile Set: PM500 Integrated Amplifier & ST300 AM/FM Tuner (1980)

Experience classic Marantz hi-fi sound with this matching vintage stereo amplifier and tuner bundle from the early 1980s. The Marantz PM-500 DC integrated amplifier delivers 50 watts per channel and features a built-in 5-band graphic equalizer, dual phono inputs, LED power meters, and versatile audio controls. Paired with the Marantz ST-300 AM/FM stereo tuner, featuring iconic Gyro-Touch tuning and an illuminated analog dial, this silver-face system combines exceptional vintage styling with impressive audio performance. Fully tested, refurbished, and SPENCERTIFIED for reliable everyday listening.

CONDITION

SPENCERTIFIED- Fully certified by Spencer

Refurbished and SPENCERTIFIED

100% tested and functional. Controls and switches cleaned with WD-40 Specialist Electrical Contact Cleaner. Internal boards and connections inspected, amplifier DC offset checked, and major audio functions verified for proper operation. Tuner stations come in clear and crisp.

Both components feature attractive silver aluminum faceplates, matching knobs, and classic Marantz styling.

Cosmetic Condition: 9/10

Both units present very well for their age. The silver faceplates appear clean, with clear lettering and intact controls. Only minor surface wear.

Functional Condition: 10/10

WHAT'S IN THE BOX?

• Marantz PM 500 DC Stereo Integrated Amplifier
• Marantz ST 300 AM/FM Stereo Tuner
• Speaker Wire

FEATURES

Marantz PM500 DC Stereo Integrated Amplifier

• 50 watts per channel RMS into 8 ohms

• Direct-coupled (DC) stereo amplifier design

• Built-in 5-band graphic equalizer

• Equalizer frequency bands: 50Hz, 200Hz, 800Hz, 3.2kHz, and 12.8kHz

• Equalizer defeat switch for bypassing tone adjustments

• Two dedicated phono inputs for connecting turntables

• Dedicated tuner input

• Tape/Aux input for additional audio equipment

• Dual tape monitoring and tape dubbing capability

• Tape copy selector for recording between tape decks

• Dual LED power level meters displaying left and right channel output

• Independent volume and balance controls

• Loudness enhancement

• Low-frequency filter for reducing unwanted rumble

• Mono/stereo switching

• Dual speaker system selection

• Front-panel headphone jack

• Silver brushed aluminum faceplate

• Large rotary controls and traditional Marantz styling

Marantz ST300 AM/FM Stereo Tuner

SPECIFICATIONS

Marantz PM500 DC Integrated Amplifier

• Power Output: 50 watts per channel RMS at 8 ohms

• Channels: 2 (Stereo)

• Frequency Response: 10Hz–60kHz

• Total Harmonic Distortion: 0.03%

• Damping Factor: 110

• Signal-to-Noise Ratio: 88dB (Phono), 93dB (Line)

• Equalizer: 5-band graphic equalizer

• Phono Inputs: 2 moving-magnet turntable inputs

• Additional Inputs: Tuner, Tape 3/Aux, Tape 1 and Tape 2

• Outputs: Dual speaker systems, headphone jack, tape recording outputs

• Speaker Connections: Two selectable speaker systems

• Power Requirements: 120V AC, 60Hz (U.S. model)

Marantz ST300 AM/FM Stereo Tuner

• Tuning System: Analog Gyro-Touch

• FM Frequency Range: 87.5–108 MHz

• AM Frequency Range: 525–1605 kHz

• FM Sensitivity: 0.9 µV (Mono)

• FM Signal-to-Noise Ratio: 65dB (Mono), 63dB (Stereo)

• FM Selectivity: 65dB

• Display: Illuminated analog tuning dial

• Meters: Signal strength and center tuning

• Audio Output: Analog stereo line output

• Antenna Connections: AM and FM

• Power Requirements: 120V AC, 60Hz (U.S. model)

DIMENSIONS

• PM500 Amp: 16.4" W x 5.7" H x 13" D (28.6 lbs)
• ST300 Tuner: 16.4" W x 5.7" H x 9.6" D (9.9 lbs)

INPUTS

• AM/FM Antenna (back)
• Tape x2 L/R (back)
• Tuner x1 L/R (back)
• AUX x1 L/R (back)
• Phono x2 L/R  (back)
• GND x1 (back)
  

OUTPUTS

• Headphone Jack x1 (front)
• AC Outlets x3 (back)
• Speakers L/R x2 (back)
• Tape L/R x2 (back)
  

MANUFACTURER

• Made in Japan