Sony PUA-286
A 16-inch transcription arm from the days when Sony meant to be taken seriously at the top of the market.
Overview
The PUA-286 is the long version of Sony's PUA-237 tonearm — a 16-inch transcription arm rather than the 12-inch standard model. Sony listed it at $99.50 when the two arms were introduced together, which put it fourteen dollars above the 12-inch PUA-237 ($85) and made it the pricier of the pair. It was never a budget piece, and Sony's own advertising at the time positioned the arm as "the first truly professional arm designed for the non-professional" — a phrase that says as much about the market Sony was chasing as about the arm itself.
The PUA-286 was part of a coordinated push into high-end componentry. Sony introduced the arm alongside the TTS-3000 Servomatic turntable ($149.50), the TA-1120 integrated amplifier ($399.50), the TA-3120 power amplifier ($249.50), and the VC-8E moving-coil cartridge ($65). The PUA-286 was the longest and most expensive arm in that lineup — a statement piece as much as a working tool.
What the extra length buys is geometry. A 16-inch arm reduces tracking error across the record compared with a shorter arm, which is why transcription arms of this length were favored in broadcast and archival work. Sony's own copy for the PUA-237 (the design the PUA-286 extends) claimed "optimum geometry and mechanical responsiveness for flawless tracking accuracy with the highest compliance cartridges," and described effective antiskating compensation at every position on the record plus a lateral stabilizer that locates the center-of-mass in line with pivot and stylus. The same design language carried over to the 16-inch version.
The arm is a balanced type with a double counterweight for accurate balancing, and a separate sliding weight for stylus force, adjustable from 0 to 3 grams. A cueing lever raises the arm or lowers it gently on a damped piston. Sony's literature also describes a semi-automatic lowering function for the lead-in grooves of 7-, 10-, and 12-inch records. Tracking error is held to less than ±2 degrees across the record — a figure that reflects the long effective length.
Period testing treated the arm as a reference-grade piece. A period review in High-Fidelity (November 1966, p.37) described Sony's approach to rumble in its turntable design, noting that the motor shaft was coupled to a frequency generator feeding a highly frequency-sensitive servo control circuit — an approach the company framed as making rumble virtually unmeasurable and inaudible.
Sony's own advertising was happy to lean on the arm's reputation. A 1969 campaign for the "$2001 system" — three TA-3120 amplifiers, a TA-2000 preamp, a TA-4300 crossover, a 5000FW FM stereo tuner, a TTS-3000 turntable, and the PUA-286 — described the arm as tracking records "flawlessly" alongside a turntable that High Fidelity had rated as having "the lowest rumble figure yet measured (-77dB)." That's marketing copy, not an independent verdict, but it shows how Sony wanted the arm positioned: as the front end of an all-Sony reference system.
For a collector today, the PUA-286 is a niche piece. It's a long transcription arm, which limits it to plinths and tables with enough real estate behind the spindle — it will not drop onto a standard 9-inch or 12-inch mounting board without modification. The 16-inch length that makes it interesting is also what makes it awkward. Original headshells, counterweights, and cueing parts are the usual failure points on arms of this age, and the PUA-286 shares its bearing and cueing design with the more common PUA-237, which helps slightly on parts. Buyers should expect to inspect the cueing piston and the antiskate mechanism closely, and to verify that the lateral stabilizer and both counterweights are present — missing pieces are difficult to source.
It is not a beginner's arm and it was never intended to be. It is a period document of Sony's first serious attempt at the top of the hi-fi market, built to a standard that the company's own advertising was not shy about claiming.
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