Marantz 2240 Stereo Receiver

The Marantz 2240 is a classic integrated stereo receiver produced from 1974 to 1977, representing the golden era of analog audio. As part of Marantz’s revered 22xx series, the 2240 combines a high-fidelity amplifier, phono preamp, and AM/FM tuner in a single chassis, delivering the warm, musical sound Marantz is celebrated for. With its discrete amplifier design, dual power supply, and premium walnut veneer cabinet, the 2240 remains a sought-after component among vintage audio enthusiasts and collectors.

Specifications

Feature	Specification
Model	Marantz 2240
Year of Production	1974–1977
Power Output	40 watts per channel (8 ohms, 20Hz–20kHz, <0.3% THD)
Number of Channels	2 (Stereo)
Speaker Impedance	8 ohms
Tone Controls	Bass, Mid, Treble
Inputs	Phono (MM), Tape, Aux, Tuner
Outputs	Preamp Out, Main In (for external amplifier or processor)
Tuner	AM/FM with analog tuning dial
Phono Input	Yes (Moving Magnet)
Power Supply	Dual regulated power supply
Loudness Contour	Yes
Case Material	Walnut veneer wood cabinet
Dimensions	17" W × 6" H × 14" D
Weight	26 lbs (11.8 kg)

Key Features

Discrete Amplifier Design: Utilizes discrete transistors instead of integrated circuits, contributing to its smooth and dynamic sound.
Dual Power Supply: Separates power for analog and tuner sections to reduce noise and crosstalk.
Phono Preamp: Built-in MM phono stage ideal for vinyl playback without external preamps.
Tone and Loudness Controls: Independent bass, mid, and treble controls with a loudness contour switch for enhanced low-end at lower volumes.
Preamp Out / Main In: Allows integration with external power amplifiers or signal processors for system expansion.
Classic Aesthetic: Elegant walnut side panels and Marantz’s signature VU meters and analog tuning display.

Sound Signature

The Marantz 2240 is renowned for its warm, smooth, and engaging sound profile. Its detailed midrange makes it especially well-suited for vocal and acoustic recordings, while the non-fatiguing character ensures long listening sessions remain enjoyable. The discrete amplifier section delivers a rich harmonic texture that many describe as “musical” and “analog,” making it a favorite for vinyl enthusiasts.

Historical Context

The 2240 was part of Marantz’s 22xx series of integrated receivers, which were developed during the peak of the analog audio era. These models were engineered for superior build quality, sonic performance, and reliability. The 2240 stood out for combining high-end features like a dual power supply and discrete amplification in a consumer-friendly package. As one of the last generations of fully analog receivers before the digital revolution, the 2240 symbolizes the craftsmanship and audio purity that defined 1970s hi-fi design.

Maintenance and Tips

Like all vintage electronics, the Marantz 2240 benefits from regular maintenance to ensure optimal performance:

Cleaning Controls: Over time, potentiometers and switches can become noisy. Use contact cleaner (non-residue type) to clean volume, tone, and input controls.
Capacitor Replacement: Aging electrolytic capacitors can degrade, affecting power supply stability and sound quality. Recapping the unit is often recommended, especially if it hasn’t been serviced in decades.
Lamp Replacement: The tuning and power indicator lamps may fail. Replace with appropriate low-voltage bulbs (typically 12V).
Relay Issues: Some units may develop intermittent relay problems. Inspect or replace relays if audio cuts out or channels drop.
Bias Adjustment: After recapping or extended use, amplifier bias should be checked and adjusted by a qualified technician to ensure balanced output.

Collectibility and Market Value

The Marantz 2240 holds strong appeal among vintage audio collectors, earning an 8/10 on the collectibility scale. Its combination of sound quality, build integrity, and iconic design ensures steady demand. Units in original, unmodified condition with clean cosmetics and fully functional operation command the highest prices.

Market Value: $300–$600 USD, depending on condition, originality, and recent servicing.
Restoration Potential: Well-restored units can approach the upper end of the price range, especially if upgraded with modern maintenance while retaining original components.

Conclusion

The Marantz 2240 remains a benchmark of 1970s integrated receiver design. With its lush sound, comprehensive feature set, and timeless aesthetics, it continues to deliver exceptional performance for vintage audio lovers. Whether used as a centerpiece in a classic hi-fi setup or restored as a collector’s item, the 2240 exemplifies Marantz’s legacy of quality and musicality.