Response Audio started the Jolida upgrade over 20 years ago. We have since The Jolida 3205 modification is more than just a parts replacing upgrade. Anybody can swap out parts. What you get with the 3205 modification is a complete strip-down of the amplifier and redesigned input stage.
When your unit arrives, it is first tested to make sure everything is in proper working order BEFORE tear down and rebuild. If you are having problems with your unit, please mention this to us prior to sending it in for the modification.
When we are finished upgrading your unit, the only original parts remaining are the transformers.
You can expect your "new" Jolida amplifier to be more focused throughout the frequency ranges, a more focused soundstage and have better dynamics control.
For the audiophile on a budget, why spend your hard earned money on a new amplifier when you can save thousands of $$$$ and transform your older Jolida into a contender with $3K units. Transform your older Jolida amplifier into something that will compete with much more expensive units on the market and still maintain that classic nostalgic tube amp look.
The 3205 modification allows you to use EL34, KT77, 6550 or KT88 tubes in any of the amplifiers mentioned. All that is needed to do is install tubes of your choice and bias accordingly. Bias instruction sheet included.
Jolida 3205 Modification
Includes all JD302A/B and JD502A/B