Sony PS-2300A (c. 1972)

A belt-driven turntable based on the PS-2300, with a precision motor, a low-vibration design and a universal tonearm.

Overview

The Sony PS-2300A is a belt-drive turntable introduced around 1972 as a cosmetic "dress-up" version of the PS-2300. It stresses basic performance, with an improved mechanical design. Sony gave it a dedicated 4-pole hysteresis synchronous motor, built for minimal vibration, and a high-precision polyurethane belt. The bearing is an oilless metal type that needs no lubrication, which helps long-term reliability. The tonearm is a static balanced universal design with a built-in lifter, and it takes standard headshells, so most cartridges will fit. The detachable acrylic dust cover has a felt/fleece top surface. A 45 rpm adapter comes with the unit.

Specifications

Turntable platter	31 cm aluminum die-cast, 1.5 kg
Motor	4-pole hysteresis synchronous motor
Drive system	Belt drive
Speeds	33 1/3, 45 rpm
Start-up time	Within 1/2 rotation (at 33 1/3 rpm)
Wow & flutter	≤ 0.07% WRMS
Signal-to-noise ratio	≥ 48 dB
Tonearm	Static balanced universal tonearm
Effective length	245 mm
Total length	336 mm
Overhang	14 mm
Tracking error angle	+2° 16', -1° 12'
Offset angle	20° 40'
Stylus force adjustment range	0–3 g (0.1 g increments)
Headshell weight	10.5 g
Usable cartridge weight	4–13 g (CW-50 counterweight used for 13g or more)
Cartridge	IM Type
Frequency response	15 Hz to 22 kHz
Channel separation	25 dB (1 kHz), 23 dB (10 kHz)
Output voltage	5 mV
Recommended load impedance	50 kΩ
Compliance	10 x 10⁻⁶ cm/dyne
Vertical tracking angle	15°
Recommended stylus force	1.5–3 g (2 g optimum)
Stylus	0.5 mil diamond
Cartridge weight	6.5 g
Replacement stylus	ND-126G (¥2,000)
Power supply	100 VAC, 50/60 Hz
Power consumption	9 W
Dimensions (W x H x D)	490 x 164 x 395 mm
Weight	7.2 kg

Design

The PS-2300A uses a dedicated hysteresis synchronous motor designed for minimal vibration, and a high-precision polyurethane belt for consistent speed. The oilless metal bearing needs no lubrication, which helps long-term reliability. The tonearm is newly developed and universal, with a built-in lifter. It takes standard (international) headshells, so cartridges are interchangeable. Low-capacitance output cables cut high-frequency loss. The detachable acrylic dust cover has a felt/fleece top surface for added protection.

Context

The PS-2300A is an enhanced variant of the Sony PS-2300, marketed as a cosmetic upgrade that keeps the core performance features. It is listed among Sony's "Legendary Products" alongside models such as the PS-X75 Biotracer and PS-8750.

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