BK BUTLER TUBE WORKS BLUE PLUS
BK BUTLER TUBE WORKS BLUE SERIES

The treble pot's range definitely isn't narrow. I used the EffectsLayouts board as a guide but haven't built that one to compare. The bass pot doesn't seem to have as significant an effect as I expect - I haven't spotted an error in the tone-stack but there might be one. I'd like to try a 12AU7 in it but all I have laying around are 12AX7s. I haven't noticed the box getting warm, but I haven't had it on for more than an hour or two. It consumes about 150mA 12V, but at startup draws >350mA for some seconds as it warms up. It uses an LT1054 like EffectsLayouts design. Board-mounting the bass and treble pots instead is probably the way to go. It could use some improvement - the board isn't well supported so dropping the pedal could break the tube. Here's the layout file if you want to play with it. Poor planning, needs more work, but since the build runs I just jammed in a box up-side-down instead. The original plan was to board-mount the level and gain pots with the tube facing down and the DC jack above it, but I tried and it didn't fit.

BK BUTLER TUBE WORKS BLUE PLUS

The top-side has 3 jumpers, plus one on the daughter board. That is to say, a double-sided board isn't necessary, it's just for mechanical strength. I made a double-sided board so I could effectively solder wires and the daughter-board underneath, but of course there are no vias, so they still needed to be soldered to the underside. I wanted to see if I could squeeze it in to a 125B, so I made a layout using ExpressPCB Plus and etched the board. Well, if you don't mind a 1590BB there's this. 'Understanding How Transistors Work' - Stompbox Studies 'Everything You Need to Build a DIY Guitar Pedal' - Pedal Haven 'So youвЂ™re starting out - A guide to what youвЂ™ll need to build pedals.' Paypal preferred, USPS Money Order is OK too.This is an open community for the do-it-yourself pedal builders of reddit! Please use this subreddit to share knowledge, give/receive help, and show off your custom builds! Looking for troubleshooting help? Please read this first! I went through this unit with a fine toothed comb, so to speak, and repaired all questionable solder connections, and inspected all components. All the pots are quiet, and everything works as designed. It has the 'steel mod' as verified by Genz-Benz techs. This is the 2 channel version with 2 12AX7 tubes for a great tube sound. I will also email the schematics for this preamp to the purchaser. Topic: BK Butler Blue Tube II model RT-924. No footswitch is included, but it takes a stereo plug like many other amps use.Д«oth my Gretsch Country Gent, and my steels sound great through it.real good range of tone control. A footswitch jack for a two-switch pedal is available on the back panel to select channel 1 or 2, and to turn on/off the Stacked feature.

BK BUTLER TUBE WORKS BLUE SERIES

The two channels can be run in series with each other(Stacked), or separately, allowing for two different instruments to be used. This loop works great with stomp pedals, or line level effects devices. You have a set of Dry outputs and also 'wet stereo outputs which include signal from the 'mono-send/stereo-return' effects loop. Several outputs are available as line and instrument levels via separate jacks (no switches involved).

There's an input jack on the front and the rear for easy rack configuration. Case has a few scuffs, but nothing major, and has been mounted in a rack. It has the 'steel mod' as verified by Genz-Benz techs.

Bk butler tube works blue