Sony PS-2350 (1977)

At 7.7 kg, it sits solid on the shelf—not heavy by audiophile standards, but substantial enough to suggest it means business.

Overview

The Sony PS-2350—often referred to in shorthand as the PS-23 or sometimes confused with the PS-2310—is a self-contained belt-drive turntable system from the late 1970s, built during a period when Japanese manufacturers were refining mass-market hi-fi with precision engineering. It wasn’t positioned as a flagship, but it carried Sony’s commitment to tight tolerances and user-friendly automation. This is a machine designed for reliability, ease of use, and consistent performance, not for showy sonic revelations. Owners report it delivers a clean, stable signal with low mechanical noise, thanks to a carefully isolated motor and a thoughtful chassis layout.

It spins at 33 1/3 and 45 rpm using a 4-pole hysteresis synchronous motor, a design known for low vibration and excellent speed stability. The motor drives a 300mm aluminum die-cast platter via a high-precision urethane belt, both sides of which are polished to minimize surface irregularities that could induce flutter. Startup is brisk—within half a rotation at 33 1/3 rpm—and speed changes are handled by a lever system with a protective mechanism to reduce mechanical disturbance. The platter bearing uses oilless metal, meaning it’s meant to run maintenance-free, a practical touch for users who didn’t want to fuss with lubrication.

The tonearm is a static balanced universal type, 221mm in effective length, with an offset angle of 20°30’ and an overhang of 15mm. It’s equipped with an inside force canceler, lateral balancer, and height adjustment (±5mm), features that suggest Sony aimed for flexibility in setup despite the unit’s modest price point. The arm also includes a cartridge tilt adjustment of ±13°, useful for fine-tuning alignment with different cartridges. It ships with the SH-135 headshell (7.5g) and is rated to handle cartridges between 4g and 12.5g. The included XL-15 is an MM-type cartridge with a 0.5 mil diamond stylus, 3 mV output, and a compliance of 10×10⁻⁶ cm/dyne. Optimum tracking force is set between 1.5g and 2.5g, with 2.0g recommended—light by today’s standards, but typical for the era.

Despite its automation—auto-return and auto-cut functions included—some users have noted a slight edginess in female vocals and high-level passages, possibly attributable to the tracking force being set at the lighter end of the range or inherent characteristics of the arm’s damping. Still, one owner summed it up simply: it “works well enough.” That’s perhaps the fairest assessment. It wasn’t trying to compete with the finest manual turntables of its day, but it offered a compelling package of features, build quality, and sonic neutrality for the price.

Specifications

Key Features

4-Pole Hysteresis Synchronous Motor with Low Vibration

Sony developed this motor specifically for turntable use, emphasizing minimal mechanical disturbance. The 4-pole hysteresis design contributes to excellent speed stability and low wow and flutter—measured at 0.06% WRMS, a solid figure for a consumer-grade unit of its time. The motor is isolated from the platter via a belt, and the entire drive system includes a protective mechanism in the speed-switching lever to further reduce vibration transmission.

Oilless Metal Turntable Bearing

The main platter bearing uses oilless metal, eliminating the need for periodic lubrication. This was a practical engineering choice aimed at long-term reliability and user convenience. Combined with the 1.5 kg aluminum die-cast platter, it provides sufficient inertia for stable rotation without demanding maintenance.

Static Balanced Universal Tone Arm with Inside Force Canceler

The arm’s static balance design allows for precise tracking force adjustment from 0 to 3g in 0.2g increments. The inclusion of an inside force canceler helps counteract the natural inward pull of the arm as it moves across the record, reducing distortion and wear. The lateral balancer and ±5mm height adjustment add further setup flexibility, making it adaptable to a range of cartridges within its 4g–12.5g weight limit.

Auto-Return and Auto-Cut Mechanisms

These automation features were a selling point for casual listeners who wanted a “set and forget” experience. After the record finishes, the tonearm lifts and returns to its rest, and the platter stops—convenient, though some purists argue such mechanisms can introduce micro-vibrations. In practice, the system appears well-damped, and the benefits likely outweighed any minor sonic trade-offs for most users.

Removable Acrylic Dust Cover with Fleece Top Design

The dust cover isn’t just functional—it’s designed to minimize static buildup, thanks to a fleece-lined top. It’s easily removable for cleaning or when a clear view of the platter is desired. While acrylic can attract dust, the fleece lining helps reduce airborne particles settling on the record surface during playback.

Low-Capacity Output Cord

The interconnect cable uses a low-capacity design to reduce high-frequency loss, preserving detail in the treble range. This attention to signal path integrity reflects Sony’s effort to maintain fidelity even in the cabling, a detail often overlooked in budget systems.

Collectibility & Value

Current listings show a wide range of prices, from €9 to €220, suggesting condition and seller perception play a major role in valuation. A unit listed for €24 was noted as “DaCapo Audio,” possibly indicating refurbishment, while others appear to be untested or sold “as-is.” Spare parts are occasionally available: a replacement flat belt is listed for €9, a Tonar VL-32G stylus for €24, and a JICO-branded equivalent for €59. The SH-150 replacement shell remains available at ¥1,200, a sign that some support infrastructure still exists. While not a high-demand collector’s item, the PS-2350 maintains a quiet presence in the vintage market as a functional, well-engineered relic of Sony’s analog era.

eBay Listings

As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.

Related Models

• Sony ps-5550 (1978-1980)
• Sony ps-lx5r (1983-1985)
• Sony ss-7220a (1970s)
• Sony ss-97 (Late 1970s (approximately 1977-1979))
• Sony ss-999 (Late 1970s (approximately 1977-1979))
• Sony st-j88 (1986-1988)
• Kenwood kl-888s (Late 1970s (approximately 1978-1980))
• Sansui sax-200 (Late 1970s)
• Sansui sax-600 (Late 1970s)
• Sansui sr-222 (1973-1975)