Ok; this may ruffle some feathers, but JMHO! Yesterday I swapped the amps on my two systems (living room and family room...same source). Put the 300x2 on the EPI 1000's in the family room and the TFM-42 back on the Sphere's in the living room (where it - or the TFM-45 - was before getting the 300x2). The 1000's have always sounded better than my DIY Sphere's (but both with EPI drivers: 4x8" in the 1000's and 6x6.5" in the Sphere's). However, after I installed the 300x2 Sunfire amp on the Sphere's it was a lot closer - at least I thought so: better treble, more "command" than the Carver amp.....so since the 300x2 helped the Sphere's sound I reasoned that if I put the 300x2 on the (better sounding) 1000's it would be like wow! But that's not really seeming to be the case: the treble on the 1000's now seems a bit "overdone" AND I seem to be liking the "old" way the Sphere's sounded with the more "tube-like " sounding re-furbed TFM-42! I can only speculate that perhaps the TFM-42 IS more "tubelike" (more "musical" and "smoother" sounding than the perhaps slightly more SS sounding and albeit more "powerful" Sunfire....). Could also just be "system synergy" (the Sphere's were/are a bit "bass heavy" with the TFM-42: with more "emphasis" on the treble end the 300x2 "evens this out" and thus improves them overall, whereas the opposite is true with the 1000's: they allready ok in the treble end and the extra "emphasis" of the 300x2 is just a bit too much...don't know for sure; all this very subjective and song dependent of course). But for now I'm going back to the Sunfire on the Sphere's and the TFM-42 on the 1000's (which for MY system sounds better than with the 300x2.....YMMV!) - Ed
LR: AudioEngine wireless link from family room preamp to Barcus-Berry 2002R Sonic Maximizer to GlowPower Zyxt IC's to Sunfire 300x2 to Nordost 6M bi-source wires to AOS 28" MDF spherical speakers using six 6.5" woofers and eight 1" dome tweeters symm. arranged around the surface.
SS system: CX-995V DVD to AV-634x 3-4 channel amp (center/rears) & M1.0t mk-II opt2(fronts).
Garage: 300 disk changer to Entech 202.5 DAC to MXR150 Receiver (pre) to TFM-42 to EPI 400 speakers.