Sony TC-355

The Sony TC-355 is a highly regarded consumer reel-to-reel tape deck from the late 1960s to early 1970s (released around 1968-1974). Like the TC-350, it was a "Tapecorder" system that offered a crucial feature for audio enthusiasts: a three-head system enabling real-time monitoring of the recording. 

It was designed to be a high-fidelity component for the home, often presented in a walnut-finish wood base.

Key Specifications

• Tape speeds: 7½, 3¾, and 1⅞ ips (19, 9.5, 2.38 cm/s)

• Heads: 3 (1 record, 1 playback, 1 erase) for off-tape monitoring

• Reel capacity: Up to 7 inches

• Motors: Single motor drive

• Frequency response: Varies by speed (typically 30-18 kHz at 7½ ips)

• Power: 100 VAC, 50/60 Hz; ~30W consumption

• Dimensions: 386 x 180 x 355 mm (W x H x D)

• Weight: ~10 kg

• Inputs/Outputs: Mic, line in/out, headphone jack; equalization NAB/CCIR

This single-motor deck offers sound-on-sound capability and auto shut-off but is prone to sticky-shed syndrome issues common in 1960s Sony models, requiring maintenance for reliable operation. 

The TC-355 is highly regarded for its sound quality and features, but like all vintage Sony transports of this design, it is susceptible to mechanical issues over time:

• Sticky Grease: The mechanical linkage, particularly for the pinch roller and speed change, often used a white grease that hardens. This can prevent the pinch roller from engaging automatically or cause erratic speeds, necessitating a full cleaning and re-lubrication.

• Belt/Idler Wear: As a single-motor, idler-wheel driven unit, the performance depends heavily on the condition of the rubber parts (idler wheels and belts), which often need replacement to restore proper speed and torque.

The TC-355 remains a popular choice for vintage audio enthusiasts who want the flexibility of a three-head deck without the size or expense of a higher-end, multi-motor machine.