Peter_S
100+ Head-Fier
- Joined
- Nov 9, 2002
- Posts
- 214
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- 22
I am aware that there are two current versions of the 727, the 727ii (USA verson) and the 727a (Japanese version). I just purchased a 727a that was modified for 115v by Justin at Headamp (when the unit also received the feedback mod). My understanding is that the unit should now be suitable for US voltages. However, I am told that the Stax equipment is very sensitive to excess voltage. My wall outlet is currently reading 122v, and I've seen it slightly higher than 123v. While this is reportedly within the NEC specifications for residential voltage, I am concerned that it might be too much for the amplifier. I'm hoping that Stax aficionados can weigh in here to answer the following questions:
1) Is a power modified 727a the SAME as a 727ii (the modification based solely on switching wiring on the power transformer)?
2) Assuming yes, should both units be able to work within the standard range of US residential voltage (e.g. 123.6V to 116.4v)?
3) If the answer is no, what range should a power modified 727a work in? The seller told me it was modified for 115v, though I suppose it was modified for whatever the transformer would allow.
Thanks in advance Stax aficionados!
Peter S.
PS - I prefer not to use a stepdown transformer, as my experience with them is that they are noisy (hum)
1) Is a power modified 727a the SAME as a 727ii (the modification based solely on switching wiring on the power transformer)?
2) Assuming yes, should both units be able to work within the standard range of US residential voltage (e.g. 123.6V to 116.4v)?
3) If the answer is no, what range should a power modified 727a work in? The seller told me it was modified for 115v, though I suppose it was modified for whatever the transformer would allow.
Thanks in advance Stax aficionados!
Peter S.
PS - I prefer not to use a stepdown transformer, as my experience with them is that they are noisy (hum)