1. BA3 Preamp board (linestage)
Up for sale is my fully built BA-3 gain stage which does not require any further introductions as its the front end stage from the famous BA3 amplifier. You can check out the detailed information, build guides and reviews from this thread. I got the board + matched 2 pairs of the Linear Systems LSJ74/LSK170 (Grade B) from the www.diyaudiostore.com site. The board also has the genuine 2SK2013/313 matched 2 pairs from a member of diyaudio.com mounted on heat sinks. Also the big ClarityCaps mounted on the board are genuine brought from the diyaudio.vn site who is the official distributor of ClarityCaps in Vietnam. All the electrolytic caps are very good quality of either Panasonic or Nichicon and the resistors are Vishay Dales brought from mouser/digikey.
2. Omishra/Sachin PSU
No need to introduce about this simple and easy to build PSU set which I modded by removing the inductors and it easily powers the BA-3 with the 22v RCORE transformer.
3. EMD RCORE
This is the custom ordered 22-0-22v 1.36A transformer from the EMD, Hyderabad.
4. 10k Stepped Attenuator
This is one of the best quality stepped attenuators available in the market and not any cheap Chinese ones. Handmade with very good quality resistors on a smooth sounding pot, brought from diyaudio.vn with 10K impedance (as per reviews the recommended one for BA-3 line stage).
So the entire kit makes a beautiful preamp (line stage) for any pairing with power amplifier. Above all this BA-3 line stage being at very good gain can power decent quality headphones (so acts like a very good quality headphone amp). It powers and plays awesome even with my HD598 headphones. Willing to sell the entire kit with what is listed for Rs. 12,000/- (+ shipping at actuals) which is way way below my actual build cost. So low ballers will be ignored and I would prefer to sell it locally and anyone can come down inspect and pick up the kit. But shipping is also possible and at actual cost and risk by the buyer and I will try and pack it securely. I would also prefer to sell this as an entire kit as one can make a superb sounding preamp and breaking the items may not make sense at this point of time. In fact the PSU + RCORE is like free in this kit looking at my sale price.
The BA-3 right now is configured for the biasing and offset but whoever purchases need to set the DC voltage on the PSU and may require to bias/offset once again. It needs some DIY effort but easy to do that if you go through the above build guide which describes in minute details. I have left the powering cables intact for easy assembling.
Interested please PM me. Here are the mandatory pics with the handle for reference.
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