j-curve
100+ Head-Fier
- Joined
- Apr 15, 2002
- Posts
- 489
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- 11
A/B testing my new zero ohm output impedance headphone amp against the amp in my MZ-R909 MD player reveals something astonishing - the Sony MD's headphone amp is no slouch! I have to wonder why portable players get so much stick in this forum. I measure the output impedance of my MD at 2 ohms, and the thing drives the HD580 as loud as I want. Most of the time I have the volume set between 22 and 26, although I have occasionally needed full volume (30/30). Even then it doesn't distort.
I think this performance beats the headphone outputs of most component equipment unless you're trying to drive AKG's or something with voice coils wound out of old toaster elements.
Admittedly the ergonomics of a (Sony) MD recorder used as a general purpose amp are rather poor. You have to go into Rec-Pause mode and also set RecVolume to Manual to prevent any possibility that the automatic gain control will compress the sound. However, if you try this one rainy day and A/B against some more expensive alternatives you might get a pleasant surprise.
I think this performance beats the headphone outputs of most component equipment unless you're trying to drive AKG's or something with voice coils wound out of old toaster elements.
Admittedly the ergonomics of a (Sony) MD recorder used as a general purpose amp are rather poor. You have to go into Rec-Pause mode and also set RecVolume to Manual to prevent any possibility that the automatic gain control will compress the sound. However, if you try this one rainy day and A/B against some more expensive alternatives you might get a pleasant surprise.