From what I've read, the purpose of the tube buffer is to deliver a warmer tube sound through a digital amp. There seems to be more positive remarks from the tube buffer crowd than there are from the uber expensive cable crowd. Only saying that because I wouldn't call it sake oil yet. $600 speaker wire on the other hand
. Maybe spending thousands on cables makes an audible diff somewhere in the spectrum, but not to my ears; one too many Motorhead shows I guess.
To the OP, I know what you're up against. I'm kind of in a similar struggle. New cd players all seem to be trash usless you go north of $500 for one, then who knows. I had a Denon a long time ago that I got from my dad. he purchased it new back in 83. It worked great, but if you breathed too heavy the thing would skip, and the audio (regardless of the receiver's DAC) was pathetic compared to a new $40 cd player. Now I have another old Denon (circa 90?) that sounds good but skips like crazy. I also have a Panasonic DVD player that works incredible and will play cds that look like I've played frisby w/, w/out a hickup for the most part. I think I've come to the conclusion that I'd like to just find a cheaper Panasonic for $150 or so that'll play DVD audio and SACD formats.
I've looked into getting a used higher end Denon, Marantz, Sony or likewise DVD player that's about 8 or so years old on ebay. The problem is, how do you know it's going to work?? In my past experience, DVD players are hit and miss. I've had Denon (although not what I'd consider audiophile grade, was around $350 new) and it was junk. I had an HK and it was junk. I've had decent luck w/ Panasonic but others haven't. Will I have better luck if I buy the Marantz thats on ebay right now for $210 that's 9 years old and was $1600 new? Who knows. Its still a DVD player. Will I hear better sound quality through the Marantz? I don't know, that's the question!
It's my understanding that new receivers have their own DACs. Hopefully someone can answer this here, how good are their DACs? If I hook an ipod or a cd player up using RCA cables, does that play through the receiver's DAC? Or, does it use the DAC in the receiver when it's hooked up via the digital connection? All that said, will buying an external DAC make it sound better than using the DAC in the receiver???
Also, to the OP, welcome to the forum