The combination of low noise and ample transformer coupled output drive means this Headphone tube amp is perfect for use both as a loudspeaker amp and as a headphone amp, It works great with high efficiency (97 dB or higher) speakers for listening room systems that work well with similarly powered 45 amps, and practically begs to be plugged into computer sound cards and smaller speakers for desktop audio systems. A potential to woire the amp for a 32 ohm output configuration means exceptional low noise performance with headphones of virtually any impedance. The integral level control makes a very simple system possible. Only the addition of a source (CD player, portable disc player, Ipod, sound card, phono preamp, tuner, etc.) and speakers or headphones is needed to get the three dimensional, highly resolved sound of single ended triodes.
The new PT-7 power transformer has a single high voltage secondary that feeds a pseudo dual mono supply, and an improved internal shielding arrangement. There is a center tap on the heater secondary. We will also sell this transformer by itself for DIY projects. HV secondary is rated 150V and 70mADC when configured into a voltage doubler supply and the heater secondary is rated 6.3V 3.5Arms. It is the same form factor as the PT-3 and PT-5. No pricing on the standalone transformer yet.
• Natural Bamboo
• Caramelized Bamboo
Ball and Buck + Bottlehead
Boston, Massachusetts / Bainbridge Island, Washington
Questions? Contact us