random early morning #ampguts

for some reason I mostly have pix of these without the dummy load (see below) but here's what it looks like with a dummy load and a speaker output jack

Photo of inside the chassis of a fully wired Audity One recording amplifier by Curious Audio. The preamplifier and effects section is at the front left and includes an input jack, four potentiometers, four orange drop capacitors, three yellow capacitors, several resistors, and two of the four tube sockets. The power amplifier and output section uses one of the tube sockets, several resistors including larger power resistors, and much of the wiring and components in the bottom left and middle of the chassis. The power supply is toward the back of the image and includes the power inlet, power switch, fuse, pilot light, two large black capacitor cans that account for three capacitor sections, and one of the tube sockets.

almost forgot

the final #ampguts shot

Inside view of chassis for Audity One Recording Amplifier by Curious Audio. Capacitors are black, orange, and yellow. Resistors are blue and gray. There are knobs and potentiometers along the front panel that connect by wires to either the turret board or directly to the white tube sockets. Green lettering says A1-12 and also gives instructions to change the wiring to accommodate different international voltages.

ok #ampguts too

Interior of Audity One Recording Amplifier chassis that shows completed wiring of amp A1-3. Capacitors are mostly large black or orange parts. Small blue components are resistors. Pots and switches along the inside of the front panel are connected by wires to the turret board or directly to white ceramic tube sockets.

what, you want #ampguts?

well ok

here ya go!

orange cathode resistor wire from v2a to v1a (for tremolo circuit) is also not yet connected in this one

I post these under #ampguts for more circuitry enjoyment

bsky.app/profile/curi...

view inside an amplifier chassis with the wiring almost completed. There are a combo jack, three potentiomers and a pilot light seen connected to the inside of the front panel. In front of them is a yellow terminal board with brass terminals, to which many other electrical components and wires are connected. To the right are two large black electrolytic capacitor cans, and in the foreground on the left side panel are jacks and switches. Just in the front of the image are the underside of an input transformer, a smaller terminal strip with yellow and black wires connected, and upside-down writing that identifies the serial number and moniker for this amplifier, A1-4, "the Green Fifteen". There are also instructions for changing the input voltage if used in different countries.

morning #AmpGuts

this is inside the Green Fifteen, numbered A1-4 but was the tenth built bc the customer was so difficult and took forever to decide what the specs should be (me)

it's been built for two years now but this was taken before the combo jack and dummy load were wired in

#tubesky

Inside view of Audiode overdrive pedal by Curious Audio. There is a large toroidal power transformer in the lower left corner and a smaller square blue power transformer bottom center, flanked on either side by filter capacitors. Also visible are various other capacitors, resistors, potentiometers, jacks, and switches.

Back view of Audiode overdrive pedal by Curious Audio. There is a vacuum tube between two small chrome handles on the top left and various white, black, and red knobs. On the back there is a power inlet, two jacks, and a serial number sticker with Audiode branding.

by the time they made it to production, the #ampguts and presentation for Audiode pedals had been sorted

btw this is the before/after of a cap job and I made the wonderful presentation choice of having the second picture flipped 90° compared to the first so it's totally confusing, please clap

#ampguts #tubeamp

Metal badge that says: "MODEL FAX-200 117 volts. AC. 60 cy 90 watts Manufactured in Japan by Roland Electronics"

Front view from top right angle of Martel FAX-200 integrated amplifier. Brushed aluminum faceplate has a row of knobs along the bottom and a plastic radio dial inset along above the knobs. Four black switches are set on either side of the radio dial in pairs.

Today in #ampguts, we're looking at a rare #vintage integrated vacuum tube amplifier. Branded 'Martel', it was made by none other than Roland Electronics. Uses 4 x 6BM8 tubes for phase inverters and output.

One of the output tubes was glowing red. Wonder why that's happening?

Audity One, original version (2008), by Curious Audio. Steel chassis painted green with white hand-stamped letters and white knobs. Plywood cabinet with Oxblood speaker cloth.

Audity One, current version (2025), by Curious Audio. Steel chassis with white UV printed graphics and black knobs. Black Cherry cabinet with black speaker cloth.

Audiode overdrive/distortion pedal, version 1, by Curious Audio. Cast aluminum box with dark green paint and white hand-stamped text. 'audiode' is stamped above the footswitch, with 'curious audio' below.

Audiode overdrive/distortion pedal, version 2, by Curious Audio. Cast aluminum box with dark green UV printed graphics and white text. The Curious Audio logo is in the top left corner, with 'curious audio' and 'vacuum tube electronics' below. at the bottom of the pedal it says 'audiode' in larger text.

Evolution, it's real, you can see it here

Audity One & Audiode
first and last made pictures

also check the hashtags
#TubeAmp and #ampguts

where I post my nsfw pictures of the parts of amps most folks don't get to see

Inside of an Audity One tube amplifier chassis. Visible are a yellow turret board with brass turrets, potentiometers and switches, tube sockets and various color wires. The chassis is dull silver colored bare metal.

morning #AmpGuts

This is an early stage of Audity One tube amp wiring that shows the twisted pairs that distribute 6.3V from the power transformer to the pilot light (green wire) and tube heaters (black/white). Running these close to the chassis also helps eliminate hum.

Bottom view of an Audiode instrument overdrive pedal by Curious Audio. There is a clear plexiglass cover attached so the components can be seen. Aside from a healthy amount of green electrical tape, there is a blue power transformer near the center bottom of the pedal. Also visible are orange capacitors, black-wrapped silver can capacitors, audio jacks, a tube socket, and four different switches.

morning #AmpGuts

This is serial number AD-1 of the version two Audiode pedal, with a custom plexiglass bottom cover...

cool so you can see the components inside, but necessary because the enclosure for this one was too shallow and I needed a non-conductive material in case anything touched

Inside electronic wiring of Audity One Recording Amplifier by Curious Audio. The metal chassis is red and 'A1-7' can be seen written in blue ink. There are wires, orange, black and yellow capacitors, blue and grey resistors, potentiometers, and other electronic components.

morning #AmpGuts

inside of Audity One Recording Amp A1-7 "Studio Seven"

circuit is incomplete in this photo, input jack and dummy load both yet to be wired

Inside view of a guitar pedal with a vacuum tube socket. Visible is the tube socket and many electronic components around and connecting to it, including orange capacitors, blue resistors, potentiometers, and a solid copper bar.

morning #AmpGuts

this is an early (V1) Audiode Overdrive/Distortion pedal, first device I built with the now standard copper ground bar that's in all the hand-built tube stuff I make

Inside view of original 'Curious Audity' amplifier by Curious Audio. Inside the chassis, there are three large blue capacitors on the right, several smaller orange capacitors, and brown carbon film resistors throughout the electronic wiring and other components. At the top edge of the chassis are three potentiometers with white knobs. The inside of the chassis is grey.

#AmpGuts

inside of A1-0, curious green
(first one built)

Inside view of Audity One Recording Amplifier chassis wiring. There are many electronic components running from tube sockets to either a turret board or other components, such as jacks and potentiometers. There are several orange and yellow capacitors, blue resistors and one large white large resistor. Written in blue is the serial number A1-6 and instructions for wiring the power supply for different voltages.

#AmpGuts

inside of A1-6, space denim

Inside shot of red Audity One Recording Amplifier by Curious Audio, showing orange capacitors, blue and grey resistors, tube sockets, a turret board with gold turrets, potentiometers, jacks, wiring and other electronic components

#AmpGuts

inside of A1-2, red chassis

#AmpGuts

(inside of A1-12, Curious green chassis)

bsky.app/profile/curi...

Inside shot of early version Audiode Overdrive/Distortion by Curious Audio, showing orange and black capacitors, blue resistors, tube socket, a copper grounding bar, and other electronic components

#AmpGuts

(inside of version 1 Audiode Overdrive/Distortion pedal)

Inside shot of Audity One Recording Amplifier by Curious Audio, showing orange and yellow capacitors, blue resistors, tube sockets, a turret board with gold turrets, and other electronic components

#AmpGuts

(inside of A1-9, British racing green)

Inside shot of Audity One Recording Amplifier by Curious Audio, showing orange and black capacitors, blue resistors, one large white power resistor, tube sockets, a turret board with gold turrets, and other electronic components

#AmpGuts

(inside of A1-8, clear steel chassis)

Inside shot of Audity One Recording Amplifier by Curious Audio, showing orange and black capacitors, grey and blue resistors, tube sockets, a turret board with gold turrets, and other electronic components

#AmpGuts

(inside of A1-3, white chassis)

Inside shot of Audity One Recording Amplifier by Curious Audio, showing orange and black capacitors, blue resistors, tube sockets, a turret board with gold turrets, and other electronic components

OK new thread of amp guts, starting with those from the bad place

#AmpGuts

I've been forgetting to post these
#AmpGuts #TubeAmp