After many years INJA-1 the standard by which all other amplifiers will be judged is born.

With the 1db bandwidth from <1Hz to >100kHz and unmeasurable distortion up to 30kHz the only problem was volume level.

With such low distortion a lower level is still clean and distinct but, I believe, most listeners would not be satisfied.

The conclusion was that I would need a much increased output level to have a marketable product.

The amplifier may be of interest for other purposes.