My brother owns a THD UniValve amp which has a clean and neutral quality.
here is a blurb from their website: The THD UniValve is a Single-Ended Class A amplifier head with a single output tube that can be switched at will among many octal-based power tubes...
here is a blurb from their website: The THD UniValve is a Single-Ended Class A amplifier head with a single output tube that can be switched at will among many octal-based power tubes...