Well, I would be willing to organize it (and take over the distribution of the boards from Qwertyl, so that members would only pay the postage once), but the Nutube price at RS CZ is much higher than at RS UK...
It would really be good to have GB for tube in Europe!
I have decided to include 8 matched Toshiba Jfets with each, so it will
not be necessary to acquire them.
I'm back in work on the 2nd, I will remind my RS rep that he needs to be nice to keep me away from digikey
and see if he can sharpen his price on a box of nutubes.If it's worthwhile I could ship a box to whoever is distributing the pcbs.
Won't know til late next week though.
Gyuri's balanced mania
Good thing you are able to keep your mania balanced, Gyuri.
I have been considering the need of a balanced preamp myself, as my two sources are both balanced out, one DAC and one Borbely RIAA. All other sources are digital and goes to the DAC (a TEAC BTW).
However, I am not so found of the concept of two circuits "in parallel" as the common mode noise will be passed through to the next piece of equipment, for example a crossover configured likewise. Then the common mode noise will not be rejected before the power amplifier.
To this comes the challenge of a balanced volume control.
I like the short and clean signal path and the 0 dB gain of the B-1, improving CMRR will most likely mess up this.
(Maybe one could use input transformers.)
/RK
PS. Balanced B1 Buffer
Good thing you are able to keep your mania balanced, Gyuri.
I have been considering the need of a balanced preamp myself, as my two sources are both balanced out, one DAC and one Borbely RIAA. All other sources are digital and goes to the DAC (a TEAC BTW).
However, I am not so found of the concept of two circuits "in parallel" as the common mode noise will be passed through to the next piece of equipment, for example a crossover configured likewise. Then the common mode noise will not be rejected before the power amplifier.
To this comes the challenge of a balanced volume control.
I like the short and clean signal path and the 0 dB gain of the B-1, improving CMRR will most likely mess up this.
(Maybe one could use input transformers.)
/RK
PS. Balanced B1 Buffer
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