DISCLAIMER

DISCLAIMER: Vacuum tube circuits work with dangerously high voltages. Do not attempt to build circuits presented on this site if you do not have the required experience and skills to work with such voltages. I assume no responsibility whatsoever for any damage caused by the usage of my circuits.

All rights of photos and text reserved. Usage of photos or text from my blog on other websites or for any other purpose only with prior permission. If you want to use any material from my blog please contact me by email.



Thursday, November 24, 2016

Single Ended 300B Mono Blocks

Hi!

Just finished another set of 300B monos with 10Y driver.




A four chassis affair in my classic portrait style chassis:




Each mono block consists of the amp and a separate power supply.




Tango interstage and output transformers.




Of course with the ELROG ER300B as output tube.




Side views:





Yamamoto meter at the front to show the bias current of the output tube.




Best regards

Thomas



5 comments:

  1. Very nice work! I'm really looking forward to listening with them. Thanks for the great pics.

    ReplyDelete
  2. Hi, is there a specific reason to display the bias current ? I assume it is rather a retro design objective. Or is it an ON/OFF indication ?
    Congratulation to the new owner, have fun !

    ReplyDelete
    Replies
    1. It was requested by the customer who commissioned the amps and it gives an indication of the health of the output tube

      Delete
    2. With those thoriated tubes you hardly need an ON/OFF indicator :-0

      Delete