BPT 3.5 Signature vs. 3.5 Sig PLUS

Thanks, Kirk. My impressions of the BPT 3.5 Sig are that it is velvety smooth and produces music that floats in an inky black background. However, compared to the Shunyata Hydra, it robs the music of some life and sparkle. It's the life and sparkle that I miss with the 3.5 Sig. Does this return with the Plus upgrade?

Has anybody heard the Audio Power Adept System? I got that as a rec. from another member. Also,he says in the same league; Sound Applcations,but didn't mention which model.He didn't care for the BPT Sig. model, and now I kinda understand.

Anytime Grant. Yes, in my experience the Sig Plus seems to posess more natural treble extension (shimmer & decay on a cymbal hit, etc.) while overall being more neutral and not as "slightly dark" overall as the Signature model was in my experience. There is also improvements in lowered noise floor, extension in bass, dynamics, and to me the midrange seems to have more "purity" per se... perhaps the lack of "slightly darker" tonal balance that I thought the Sig. model had. As I mentioned above, Chris @ BPT will tell you if you call him, to try the amp plugged both into the amp duplex as well as the duplex next to it, as they both have different sonic characteristics.

Thanks for the tip about trying adjacent duplexes, Kirk. I'll give that a
shot.

Addendum: 3/24/05 - I unplugged my amp from the BPT 3.5 Sig GFCI
duplex and plugged it into one of the standard duplexes instead. It
made all the difference; opened up the soundstage and brought the life
back into the music. Thanks, Kirk.