SpeakerBox
Headphoneus Supremus
- Joined
- Jan 18, 2013
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Restored doesn't mean to exceed the original capability which might be subpar, especially at the headphone jack. Some vintage kit is good and some not. As I've stated having a high value resistor in series with the headphones (typically 120 Ohms, if I remember correctly, could be even higher) could have an adverse affect on the sound due to headphone impedance curves and weak damping.
The dynamic range of by far most recordings isn't sufficient to reproduce the piano dynamics you speak of. We are often led to believe huge DR in sources.
Yes some of those power supplies have serious transformers and huge capacitors.
Trust me - in this case the 1250 exceeds the original. Won't bore you with the details but I restore vintage as a hobby and the 1250 when done right is pretty amazing. How do I know?
I compare the sound to my Jeff Rowland amps which are pretty good. The 1250 is not a JRDG amp - but it holds up pretty well after my mods.
Also, I have watched piano on my scope and it does indeed exhibit intermittent clipping under 10 watts into 8 ohms. Would be worse into HP jack with 300 ohm HPs.
That said I suspect it will be even better out of the taps when I get a chance to try it.