Harp Gear Double Trouble noise reduction

Some of the early DT models hum intrusively. This can be reduced by lead dress improvements and altering  the positions of the interstage and output transformer. The improvement is significant with 500 percent reduction in hummmmmmm.

If you would like me to modify your harp gear amp just let me know. Sending the amp in is a good option if you are not in the Bristol area.