Vieta A-215: Restoration and repair
EF184
After the successful repair of the Vieta A-225, I’ve come across a slightly older model, the Vieta A-215. It’s a relatively rare model but very similar in circuitry to the…
ECC83
Restoration of a Vieta A-225 amplifier
Vieta is an audio equipment brand created in Barcelona in 1954 by the Vieta brothers, becoming a major reference for high-fidelity audio in Spain at the time. It still exists…
Roselson Stereoletta (Part 1)
The Roselson Stereoletta is a radio-record player cabinet manufactured in Spain during the 1960s–70s by the Roselson company, based in Barcelona. It was relatively popular at the time and was…
Optimus Siroco Model 160 (Part 1)
Once again, another Optimus amplifier has fallen into my hands, and this one will be the first I actually own, since unlike other Optimus models, this one was given to…
Building a Mullard 5-10 amplifier
As a summer project, I set out to build a Mullard 5-10 type amplifier using recycled materials I had in my workshop, and thus this amplifier was born. The chassis…
Optimus Alabama 100W Amplifier
This interesting amplifier was brought to me for general maintenance and a few modifications. Its owner wanted to convert the amplifier for use with guitar and bass, aiming to modify…