The First Walkman: Restoring My 1979 Sony TPS-L2
How I restored my 1979 Sony TPS-L2, the first Walkman: new belts, a clean tape path, an oiled motor, and speed set from 2.3% slow to 0%.
// Archive
Posts, technology logs, studio notes, and ongoing AERA signals.
A Journey Into the Ultimate DIY Headphone & Speaker Amp
Building the AMB Beta22: an all-discrete, balanced Class A headphone and speaker amplifier, from power supply to finished chassis.
Building the AMB Beta24 power Amp
Building two AMB Beta24 power amplifiers, a no-compromise discrete design, after meeting its designer Ti Kan in Sunnyvale.
Building the CBT-36: My Journey with Constant Beamwidth Transducers
Building a pair of CBT-36 constant beamwidth line array speakers, after first hearing them in Ti Kan's listening room.
Building a Legend: My Dual-Chassis EAR 834 Replica
Building a dual-chassis replica of Tim de Paravicini's EAR 834P tube phono preamp, with a few modern corrections.