First time working on the Spark Practice Amp. One came in with a damage input Jack.  Nice Product, well thought out design, and even sounds decent.  The owner originally requested adding balanced Lineout, but ended up not going for it.  The headphone out seems to do the trick, all be it unbalanced.

This is such a great unit, so well designed and built.  The owner mentioned the input pot was not working. The unit arrived with what looks like impact or shipping damage.  The left corner of the front panel place was bent slightly back.  On inspection I found the input pot sheared off.

I found the  sheared input pot first...

I have  a  couple of Rane 26B line mixers in to modify.  One unit had a flaky right side output connector and both had broken power connectors.  The Rane 26B use a phone type connector for its power connection. 

Latest Rabbit Hole project....Started with adding a line isolation transformer and morphed into a complete circuit rebuild... The original circuit was pretty much a widow maker design, with direct line voltage feed the amp.

3 PCM 41 units in for repairs.  These are some of my favourite delays, many fond memories playing with these in feedback.  

On the bench is a line mixer with a intermittent right side of the the 2nd output.

Interesting design inside, very late 80's...

This one came in with a loud buzzing and flickering screen...

Got to take a peak inside the M460D...

I am big fan of Rupert Neves stuff, and the Portico Series 5014 widener did not disappoint. Great attention to detail in this box!

The unit had a bad cap in the switchmode power supply filter.