I managed to pick one of these up brand new earlier this year for a steal (NZD $450 - about the same price as a pair of Sennheiser HD-498's for your reference). I use it mainly as a headphone amp, but also to drive some obnoxiously large floor-standing speakers. I always thought the...
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Interesting read.. Sharing as a point to ponder, not to challenge. I'm no expert, but I have my limited experience that corroborates what I can hear..
YMMD, I'm using the headphone out on the pm5005 with the sundaras and to my ears, the scale, seperation, impact, soundstage all are considerably better.it's squeaky clean and has black/dark background with ample power on tap (painful at 2:00 pm)
I definitely agree to yr point reg the afterthought aspect in some cases- my own experience with the headphone out of the my Yamaha Aventage Avr was exactly that - it can't even hold a candle/sucks BIGTIME compared to the marantz`s HP out. The AVR definately sounded like an afterthought.
Maybe the pm5005 is a stereo analogue power only amp' (no other circuitry for integrated dac, etc.) and the HP out shares power from speaker taps - effecting the great sound 'I'm able to get out from the unit'. Another best guess for 'my' good experience with it could be that the Sundaras being low impedance headphones aren't too difficult to drive for the pm5005. Though high impedance HP users (HD series) online also reported similar satisfying experience. Il soon be getting a schiit asgard and HD600 (dynamic, high impedance) and will report back on how incremental the gains are/different the experience is for a dedicated HP amp vis a vis the pm5005 HP out.
Yes, dedicated headphone amp has its own advantages - lower sinad, better output stage, form factor convenience, dedicated components, input impedance matching, impedance gain variability, etc.) but generalizing that integrated stereo amps HP out isn't good enough is a stretch. I'd still disagree - "solely based on my individual experience".
If one can, general rule of thumb is to get seperates - they are purpose built units. If you can't, find a good integrated that suits the pocket, convenience and pairing with gear. For someone who is on a tight budget, it turns out to be good value proposition - doubling up as amp for driving speakers and headphones.
As regards the heresy pairing with sundara, some ppl reported pairing to be harsh, and some even had blown drivers..magni3+ had no such problems..