NewAKGGuy
100+ Head-Fier
- Joined
- Jun 18, 2009
- Posts
- 188
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- 16
Bump - still looking for folks' opinions on battery life. Anyone?
/rant
i dont really understand the obsession with people writing imo....of course its their opinion, they freaking wrote it...typically if you're expressing someone elses opinion you would specify that
/endrant
Rant on, but I'm with Pauly, Spud and others when they say the P4 has gobs of power for a portable amp - its effortless. How that translates to driving a pair of large, heavy headphones that only a fanatic would take out of the house is a question I cant answer. Keep it real, however, and this little amp will deliver as much power as most sane people will ever need.
I would suggest balancing the HD600...and then rolling opamps to get the sound you want...I find that nothing satisfied me more than balancing my HD650s
They are balanced from the pb2. I was talking about the hd600 sounding too bright and harsh from pb2, I wanted opinions on the p4, if it is less bright sounding than pb2. With stock op amps, both pb2 and p4. Because I have not entered the op amp rolling thing. It scares me a bit actually.
While I no longer have my HD600's, I can't address your issue of the stock PB2 sounding too harsh and bright, but that is certainly not what I would call the native sound of the PB2. Given a proper source and used with balanced phones, it offers quite a well-balanced sound across the entire audio spectrum.
Rolling opamps will not make major changes in the SQ of the amp, as the differences between opamps (that are appropriate for use in a given amp) are subtle and the differences are more apparent in soundstaging and imaging. If you want a warmer sound, I would suggest that use of EQ is a more appropriate way of achieving the sound you want.
The PB2 is really designed for balanced use and will deliver the best sound using the balanced outputs. The stock SQ is more neutral than warm and again, opamp rolling results in changes more appropriately called "tweaks" rather than major changes in SQ.
Harsh strident highs are more likely the result of a poor source somewhere upstream of the PB2, as the HD600 is not a headphone that typically exhibits this type of SQ nor is the PB2.
Thanks for that, Ron - we see so many 'just roll op-amps' recommendations as an instant fix for almost everything, and I'm not convinced that's the case. SpudHarris and yourself are pretty much the only people whose op-amp recommendations I am prepared to consider.
Haha, I get most of my recommendations from Ron....
That said, I am really enjoying the LME49990's at the moment and not sure what Ron's take is on these. I have rolled them into most of my amps. I listend to my HD600's last night with the P4 and have to say I had a very enjoyable session. I don't remember what the stock configuration is/was but as Ron said, the differences are mostly subtle and mostly to do with soundstage and imaging which add to my enjoyment more than colouration. The P4 is able to power the HD600's easily and I think they are very well suited. I didn't compare the DB2/PB2 in balanced mode as I really didn't want to change anything about the P4 and HD600's so carried on listening.....
Thanks Ron - it sounds like the LME49860, on paper at least, should mate well with phones like the RE262/RE272. At this point I am gripping my pursestrings very tightly indeed - every time I go to the iBasso site, I look at the price on the D7 and it just doesnt compute that iBasso are giving us so much for relatively few bucks. I'm sure you will recall that there were precious few (professionally built) portable amps under 300USD just 3 short years ago, and adding a DAC to your amp pushed the price up by at least $100.
Bump - still looking for folks' opinions on battery life. Anyone?