Marantz 2252B (1977-1980)

It weighs 34 pounds. Heavy, serious, built to last.

Overview

The Marantz 2252B Stereo Receiver was produced from 1977 to 1980 and originally priced at $460. It belongs to Marantz's "Golden Era" 22X Series. This is not a receiver for quiet background listening. It was built for people who wanted performance and presence in the living room. It weighs 34 lbs (15.4 kg), and the weight comes from the dense internal construction: a chassis packed with discrete circuitry, heavy power supplies, and a tuner section designed to pull every whisper out of the FM band. The silver-face front panel with blue backlit dial lighting is a deliberate break from the earlier black-bezel designs. It looks cleaner and more modern, and it still looks like a Marantz.

Owners report a sound that's warm, detailed, and consistently musical - the "sweet Marantz sound" fans have chased for decades. It puts out 52 watts per channel into 8 ohms, which is plenty for most speakers of its era, and total harmonic distortion is low at 0.15%, so the signal stays clean at higher volumes. The FM tuner is particularly well-regarded. Sensitivity is 1.9μV, with strong rejection specs for image, IF, and spurious responses. The "Gyro Touch" flywheel tuning mechanism, first introduced on the Model 18 in the late 1960s, gives it a tactile precision that simple knob-driven tuners don't have.

The 2252B has its quirks. Service technicians note that getting to the power amplifier stage is notoriously difficult. You have to remove the under-chassis filter capacitors and speaker switch arms, which is a clear compromise of long-term serviceability for manufacturing efficiency. There's also a known issue with the signal meter "dancing" across all functions, reportedly fixable by modifying the circuit at C422. Neither is a dealbreaker, but restorers and daily users will both run into them.

Specifications

Manufacturer	Marantz
Model	2252B
Product type	Stereo Receiver
Years of manufacture	1977-1980
Original price	$460.00
Power output	52 watts per channel (minimum RMS, both channels driven into 8 ohms, from 20Hz to 20kHz, with no more than 0.15% total harmonic distortion)
Total harmonic distortion	0.15%
Frequency response	20Hz to 20kHz
Signal-to-noise ratio	70dB
Damping factor	50
Input sensitivity (Phono)	2.5mV
Input sensitivity (Aux, Tape)	150mV
Speaker impedance	4 to 16 ohms
Dimensions (W x H x D)	19-7/16" x 6-1/8" x 15-3/4"
Weight	34 lbs (15.4 kg)
Tuner section	FM stereo, FM, AM
Tuner feature	"Gyro Touch" flywheel tuner
FM sensitivity	1.9uV
FM signal-to-noise ratio	70dB
FM capture ratio	1.0dB
FM image rejection	80dB
FM IF rejection	100dB
FM spurious response rejection	100dB
FM alternate channel selectivity	70dB
FM harmonic distortion	Mono: 0.15%, Stereo: 0.3%
AM sensitivity	30uV
AM signal-to-noise ratio	50dB
AM image rejection	60dB
AM IF rejection	60dB

Key Features

Silver-Face Design with Blue Backlit Dial

The 2252B’s front panel breaks from Marantz’s earlier black-bezel aesthetic, adopting a silver dial plate that gives it a more refined, modern look for its time. The blue backlighting behind the tuning dial is not just decorative — it provides excellent readability in low-light environments and has become a signature visual cue for this generation of Marantz gear. Collectors often cite the clean, uncluttered layout as a major part of its appeal, with the “Gyro Touch” tuning knob taking center stage.

Single-PCB Power Section

The power supply, power amplifier board, and relay are all mounted on a single PCB section. That streamlines manufacturing and complicates servicing. It reflects the engineering trends of the late 1970s, and it means reaching the amplifier stage requires removing under-chassis components. Technicians call it a "design issue of fabrication VS repair." The board layout is reportedly "a lot more open than others" in the Marantz lineup, so component-level work gets easier once you have access.

Gyro Touch Flywheel Tuner

The "Gyro Touch" tuning system is carried over from the Model 18. A flywheel mechanism gives smooth, precise station selection. It's not a gimmick. The inertia of the knob allows fine control over tuning, which helps when chasing weak FM signals. Combined with the receiver's strong tuner specs, including 100dB IF rejection and 1.9μV sensitivity, it was competitive with dedicated tuners of the era.

Service-Oriented Internal Layout

Access is a pain, but the 2252B was built for long-term ownership. The main filter capacitors are replaceable, and the functional boards are separate - phono amp, tone amp, tuner, and power supply - so troubleshooting can be done one section at a time. A full recap is widely reported to restore or even improve the original sound, particularly with high-grade replacements like Nichicon PW, Panasonic FC, and WIMA MKS2 capacitors. The preamp sections use discrete transistors, so failed components can be replaced individually instead of swapping boards.

Collectibility & Value

Restoration logs indicate that a full service typically includes deoxiting pots and switches, replacing all capacitors (including filter caps), and refreshing the thermal compound on the output transistors. Capacitor types favored in recaps include Nichicon PW for power stages, Panasonic FC for preamps, and Panasonic ECQ film caps for values under 1μF. The known signal meter "dancing" in all functions has a suggested fix: a jumper at C422 and removal of the cap across the meter. No current market prices are documented in the fact sheet. Owners consistently report that a well-serviced 2252B delivers a "pleasant & sweet sound" and is considered one of the best performers in the Marantz lineup.