Additional details

Customer impressions

“I installed the DC Filament option tonight, as soon as I started it, it sounded great, no discernible hum even within a foot of the speakers (Lowther DX-4’s in Lowther Acousta cabinets)." 

“Just reporting back… I received the DC filament upgrade kit today after it spent a brief spell trapped in customs. It was a very easy hour’s work, the amp works fine, and is now absolutely silent.”

FAQs

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