My best effort so far, a 300B SET

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Stephe_K
Posts: 36
Joined: Wed Mar 03, 2021 6:46 am
Location: Atlanta GA

My best effort so far, a 300B SET

Post by Stephe_K »

I have to say, this amp turned out super clean. I made an effort to have no extra screws visible anywhere, this combined with the great looks of the 300B tubes and how well they scale with these large Edcor transformers, it looks and sounds amazing. I actually robbed all this iron from a "BlueGlow" KT88SE build and IMHO suits these tubes better. You can watch the video series on building this amp here.

https://www.youtube.com/playlist?list=P ... kE3jm9xnd9

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300B-1sm.jpg
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Stephe
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WntrMute2
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Joined: Wed Feb 24, 2021 5:38 pm
Location: Detroitish

Re: My best effort so far, a 300B SET

Post by WntrMute2 »

Lovely build! I have to ask about the tube rings and also about the mA meter. I need to source a couple for my 3C24 build coming up. Any info or is it in the video?
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Stephe_K
Posts: 36
Joined: Wed Mar 03, 2021 6:46 am
Location: Atlanta GA

Re: My best effort so far, a 300B SET

Post by Stephe_K »

I got those rings at this website, as well as volume knobs and other stuff.

https://youdaelectronics.com/collection ... washer-364

I love that besides being decorative, they provide places to attach tag strips, bolt down tube sockets etc without the hardware being visible.

I got the ma meter off a recommendation from Mark. It's not cheap, but is super high quality and isn't in the signal path at all. The switch above it is a center off double throw that allows you to switch between the tubes or turn it off when it's not being checked.

https://www.jacmusic.com/html/yamamoto/ ... Index.html

In keeping with the name of this forum, here is a picture from last night running some Shuguang Treasure 300B-Z tubes.


glow-2.jpg
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Stephe
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WntrMute2
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Joined: Wed Feb 24, 2021 5:38 pm
Location: Detroitish

Re: My best effort so far, a 300B SET

Post by WntrMute2 »

Beauty! I have started your video series. Nice stuff.
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