Epifani PS600 bass amp. Notice the integrated switchmode supply and Class-D amp in the center. Very difficult to work on if the issue is in there. Lots of SMD and modular stuff. There’s about 1Vpp of ultrasonic noise (190kHz) on the output of these amps at all times — not sure whether this is a carrier residual from the Class-D power amp or SMPS noise. In most cases it’s a non-issue because speakers won’t reproduce it (and you couldn’t hear it if they did). Nice thing is that it does 550W into 4 ohms and only weighs about 10 pounds.

Atomium Amplification, Philadelphia, PA

Atomium Amplification specializes in the repair and modification of musical instrument electronics, particularly tube amps for guitar and bass. My goal is to provide affordable repair and modification service directly to Philadelphia-region musicians, in a way that is transparent, honest, and affords an opportunity for the user to learn something about the equipment in question. I like to work one-on-one with individual musicians, in person where possible. I have experience with tube and solid-state guitar and bass amps, all sorts of effects processors, PA and pro sound reinforcement equipment, studio recording, tube and solid-state hi-fi, loudspeaker design, and electronics and setup of guitars and basses. I can probably also fix your bicycle. Email atomiumamps@gmail.com for more information.

Electronic States

1 year ago

Visit:

Atomium Amplification, Philadelphia, PA