heady 0 Report post Posted July 30, 2006 (edited) Hi, has anyone completed this amp which was bought in a group buy last year. I finally found time to populate the board and got some strange readings from my DMM on it. I am seeking some feedback from others with this board before I start ripping it apart to find the problem. Thanks. Edited July 30, 2006 by heady Share this post Link to post Share on other sites
heady 0 Report post Posted July 30, 2006 (edited) Alamak. Paiseh, malu only. Been measuring voltages using the wrong schematics. Used the pin-outs for BUF634 instead of the HA3-5003 and the dual opamp instead of the single opamp. But I am still interested to hear from those who have built this board before me. Share your experience lah. Thanks. Edited July 30, 2006 by heady Share this post Link to post Share on other sites
heady 0 Report post Posted July 30, 2006 (edited) Am now testing the PPA using OPA627 and only 1 buffer per channel. Have not set up the Class A biasing yet. Sounds very good. Very deep bass, well controlled. Nice separation. And not even run in or Class A yet. Edited July 30, 2006 by heady Share this post Link to post Share on other sites
heady 0 Report post Posted August 2, 2006 Here is the complete board, with Glassman Buffers, powered by a transformer and a Tread regulator. Jacks are just for testing, no vol pot yet. Now looking for a good case, any recommendations? Sorry for the messy pic. Share this post Link to post Share on other sites
Kippei 0 Report post Posted August 2, 2006 (edited) I built v2 . I think wanna try out the difference of descrete buffer and glassman buffer Edited August 2, 2006 by Kippei Share this post Link to post Share on other sites
heady 0 Report post Posted August 2, 2006 Kippei, can but wait until I case it. From what I understand from headfi, there is a difference but very small. This PPA and buffers, I kept for a very long time already. I think almost 1 and half years, from PPA1.1 till now PPAv2. The sound with OPA327 is merciless to the source. Lousy CD recording makes you want to stop listening immediately. Sometimes, I think we need friendlier equipment... Share this post Link to post Share on other sites
digi01 0 Report post Posted August 3, 2006 I have post mine clone at gallery. LINK Share this post Link to post Share on other sites
