Hagerman Technology

06/04/2026

Doing some advanced research for future products. This tiny pentode tube operates with a heater of 1.25V at 20mA. That's like nothing! Perfect for a pedal.

Quick test shows it fires up and puts out a very nice, clean signal with a plate load of 100k. The gears are spinning in my head...

06/03/2026

Version 4 of prototype breadboard. I'm expecting a lot out of this one. ;)

05/23/2026

05/13/2026

Sammy and my OVERDRIVER pedal getting ready for tour. Credit to Avi Ronen :)

05/06/2026

Wow, biggest order yet! I am so grateful for everyone's support and love for my pedals. Mahalo nui loa!

PS - This is also how to get a bulk discount, as shipping is charged only once per order... :)

05/01/2026

https://pollux.positive-feedback.com/reviews/hardware-reviews/hagerman-audio-cornet-mm-vacuum-tube-phono-stage/

04/16/2026

https://www.youtube.com/watch?v=60Bac-m7VSI

7 likes, 2 comments. "Hagerman Tsar Octave: The New Original!"

04/15/2026

Version 2 of new Tube Overdrive up and running. This time with a 20dB preamp section before tube and tone control after. Very well behaved. Can go from warm to edge of breakup to a bit more. Very tubey.

04/15/2026

Review coming up in future episode of TONE Magazine...

04/05/2026

https://www.hagtech.com/lm555.html

First introduced in 1972, the ubiquitous LM555 timer IC has proven to be perhaps the most popular integrated circuit of all time. One notable drawback with the design is that it is not possible to achieve an output duty cycle under 50%. Of course, an output inverter chip could be added, but there is...