Mine was a dual outlet model so I could power both my tt-81 and tt71 from it.
it came with a built in cable of about five feet so cannot comment on the almost wallwart style of your first link.
I have mine removed in distance from both the TT and power strip and I hear no hum whatsoever. |
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TT101; TT81; TT-71 text from the above link: 81/71 Very successful LP drives sold as such in Japan and Germany. In other words : the last two markets really alive with high-fidelity... today !
All tagged with the HMV logo (His Master's Voice) and original components of the Laboratory series, these were either sold as drives or as integrated players, complete with Victor's UA tonearms and CL-P plinths.
The motor of both versions is a high torque 12-pole 24-slot DC-brushless but there is no Double Bi-Directional Servo as in the TT-101 topper.
Precise FG detecting section consists of 180 slots FG yoke with a magnetic disc and an FG circuit board with equivalent 180 printed coils for excellent precision of rotation.
The servo is applied on both positive and negative areas for the TT-81, as in the TT-101, but only on positive for the TT-71.
The TT-81 is a 101 sans Double Bi-Directional Servo and with a simplified pitch control system/display ; the functions and features are nevertheless the same : +/- servo, ±6Hz of 440Hz without switching off quartz-lock switch, soft-touch transport keys and electronic braking with reverse-current circuit.
The strobe is included in the servo loop to avoid AC fluctuations from affecting the actual reading.
The TT-71 is an 81 without +/- servo, no pitch control, an even simplified stroboscope circuit and a solenoid-activated braking pad.
Many integrated players were based on these two drives : QL-10 (TT-81), QL-7 (TT-81) or QL-F6 (TT-81 but with Double Bi-Directional Servo added) among others.
As drives or as integrated versions, the TT-81 and TT-71 sold like hotcakes throughout their long 8-year availability.
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