Dynaco PAS upgrade kits, 
PAS New Generation Preamp kits
 

Erhard Audio

Bringing old tube amps back to life!
Why buy Erhard Audio tube stereo gear.....
Erhard Audio - Custom, handcrafted vacuum tube audio gear
Designed and built for the discerning analog audio enthusiast
Appointed North American distributor and reseller for all Lundahl Transformers
Appointed North American distributor and reseller for Audioamp Auto Bias Modules