Technics SP-20 (released in 1976) is a budget version of SP-10mk2. The price for SP-20 in Japan was 60 000 Yen in the 70’s. Don’t mix it up with the cheaper SP-10 released in 1969, the SP-20 is a way different (improved, powerfull turntable) and it’s only one step behind the marvelous hi-end SP-10MK2, they are looks nearly the same! The main different is the internal power supply, the rest of the specs you can read below. Technics SP-20 is wonderful Direct Drive Quartz-Locked turntable with amazing speed stabily, it plays 33 and 45 only.
This is my ex SP-20 in the teak wood plinth with UA-7045 tonearm, Stax headshell and AT20SLa cartidge:
https://scontent-arn2-1.xx.fbcdn.net/v/t31.0-8/30848737_2185174628167359_9100562755345439545_o.jpg?_... Technical data for TECHNICS SP20 (1976):
Driving System : Servo Controlled Direct Drive
Speed : 33-1/3 and 45 rpm
Platter : Aluminum diecast 32cm, weight 2.5 kg.
Starting torque Characteristic : 1.5kg × cm // Less than 0.7 (90゜) second to reach normal speed (33-1/3 rpm).
Load fluctuation : 1.5kg x cm within 0%
Rotation speed deviation : ±0.002%
Wow & Flutter : Less than 0.025%(JIS C5521)wrms.
S/N Ratio : 60dB(IEC17B) // 73dB(DIN45539B)
Power Consumption : 4W
Inertial mass : 345k × cm2
Outline Dimensions : 368.5 × 99 × 368.5mm
Weight : 8.0kg
Power : 100v / 60Hz