ppwatt.com is a discussion forum dedicated to push-pull tube (valve) guitar & bass amplifiers.

What is "push-pull" anyway?

In a push-pull amplifier, two output tubes work together in phase opposition, in contrast to a single-ended vacuum tube amplifier where the audio signal is amplified by a single power tube. In practice, the term push-pull amp applies to tube amplifiers with output stages designed to work in opposite phases. The most common push-pull amps are those with matching pairs of power tubes.

History

ppwatt.com was founded in May 2007 by members of the 18watt.com amp building forum as a result of the popularity of low cost single-ended guitar amps such as the Epiphone Valve Junior.

Because of the large interest in the Valve Junior, there was some concern over 18watt.com's focus being lost. Instead of outright banning the talk of single-ended amps, the Admins at 18watt.com provided the seed capital to set up a new discussion board for single-ended amps and sewatt.com is the result.

The new admins of sewatt.com realized that it might eventually suffer the exact same problem and decided to design the new forums to be as inclusive as possible while providing separate areas for the different genres of guitar amplifiers.

As a result, a group of discussion forums were created around the the "watt" theme under the general name "Wattkins Amp Forums". The following sites are all part of ppwatt.com:

• sewatt.com (for single-ended amps)
• 45watt.com (for JTM45/Bassman-ish amps)
• wattkins.com (for everything else)

Hopefully, the spirit of 18watt.com continues here.