However, for many reasonably efficient speakers, the Power 1 offers more than sufficient power. Over many months I used the Power 1, always with good results, with Speaker Art's Clef, Coincident's Super Conquest, Merlin's TSM and Gershman's new X-1 speakers. If you need more power, you can look to the Power 2. To generate its 55Wpc of power, the Power 1 employs four 6550 tubes for output and six 6922s as input drivers. The tubes will require replacement over time and this will depend on your usage patterns.
Average listeners can count on at least a couple years of play time from a set.
For the course of the review I stuck with the stock supplied jobs. It's worth keeping in mind that with a tube amp, there is an ability to experiment with various types of tubes that can alter the sound, for the better and worse. There are numerous specialty retailers that can help in this regard, and if you need a bit of a primer, Sonic Frontiers packages their book, A Taste of Tubes , along with the amplifier. From its appearance to its packaging to its overall presentation, the Power 1 is an extremely well thought-out, solidly built amplifier that looks great and is a snap to use. Parts and build quality of the amp are high, with a level of fit 'n finish that is very good.