Input Impedance of Kaiju 300B Amplifier

tube747 · 440

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Offline tube747

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on: January 14, 2025, 08:42:19 PM
Hello!
What is the input impedance of Kaiju 300B Amplifier?

Thanks!



Offline Doc B.

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Reply #1 on: January 15, 2025, 05:10:16 AM
100K ohms

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.


Offline Paul Birkeland

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Reply #2 on: January 15, 2025, 05:38:25 AM
It will dip to more like 65K at 20kHz, though that assumes that both trim pots are turned all the way up. 

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline tube747

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Reply #3 on: January 22, 2025, 11:12:21 PM
I still have few pairs of Magnequest SE output transformer that bought from your company long time ago, can i use it on the  Kaiju?

Thanks!



Offline Paul Joppa

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Reply #4 on: January 23, 2025, 03:43:20 AM
Magnequest Mike made a lot of different transformers - which ones do you have? There are a few that could work, with suitable modifications (minor circuit changes and a few new mounting holes.) It won't save money (custom packing is costly) and Bottlehead strongly recommends building the kit debugging it in stock form before making changes; otherwise we are not able to provide as much useful help when things go wrong. But it can be quite satisfying to make use of something you've laid away long ago!


Paul Joppa