Nelson Pass First Watt amp F1

It is not compatible with multiple driver speakers unless the crossover is designed to be driven by a transconductance amolifier.

Hey Twl, from looking at this article it appears that a frequency shaping network is required to optimize the performance of a particular driver with this amp. If the ones you heard at the show did not have one (my guess is it did not) then that may have contributed to your unfavorable impressions. I've never heard this amp and probably never will but it is an interesting concept.

Vivaldi Audio,

Please clarify if you optimized your speakers with frequency shaping networks designed to work with the First Watt. These networks seems to me to be a key component to getting good performance from a transconductance amp.

Thanks