Quote from a diyAudio thread:

"Running tests these days on VHex+.
First, the bias is right on the spot from the time I switch the power on till the heat sinks reach 50 degrees Celsius. Rock stable. Also, the offset is easy to set.
Square wave is perfect. All measurements are made at +/-53Volts with 8ohm load.
Very nice good sounding little amp!"

Accompanying images:

VHex+ modules mounted on a heatsink.

Clipping at 1KHz - seamless recovery.

1KHz square wave response.

Rise time = 1.3uS at 64V => 49V/uS slew rate.

FFT 1KHz 20V RMS @ 8 ohm load (50W RMS).

FFT 1KHz 30V RMS @ 8 ohm load (112W RMS)

Note that excellent harmonics profile - practically only H2 and H3 are in place, no high-order components produced.

The amplifier is relatively simple and very easy to build and setup.

The boards, kits and assembled modules are available for VHex+.
A comprehensive building guide is available in the DOWNLOADS section.

See the posts about the other nice VHex+ builds:

• VHex+ clean build, Greg G. (US);
• VHex+ build, James.