Build Reports

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bluesman1911
Score:
2

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Klon Klose

Project: Refractor (Klon Centaur / KTR)
Variant: Original

Build description

Excellent little PCB. It’s stuffed full but ample room for working the soldering iron. There are one or two things I would go about differently when it came time to soldering the pots, but it was a trouble free build, no real surprises. I caught one solder bridge (between the 1N4001’s) during inspection . Other than that, it was a trouble free build, even for these old eyes.

I have access to a Silver Centaur. The Refractor is as close as it gets. It’s akin to splitting hairs with 1N270’s (which I think were closer than the 1N34A’s that I tried). I’m skeptical of the original diodes all being 1N34’s but that’s a moot point. I have some more Ge’s to play with but I should have built this pedal a long time ago. Just excellent. Thank you for the effort.

Modifications or part substitutions

I found a schematic and report for the original silver. It indicated the locations where carbon film resistors were used. I followed that and used carbon films in those positions. I thought it would be a cool detail. Other than that, I stuck to the script. I used Panasonic and Nichicon lytics. Otherwise, I did not use any fancy passives. Inexpensive box and dipped film caps and no name 1/4 watt resistors. I did meter every component before building. I socketed the GE diode positions. This pedal is quiet, really quiet.

JNeedles
Score:
1

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Tele-Vision

Project: Andromeda (Nobels ODR-1)
Variant: Recommended added Bass Knob

Build description

I built this pedal to use with my tele and it sounds really amazing. However, I really love this pedal for bass. It’s now my main bass overdrive. I might modify it later or build another one with bass in mind.

I mistakenly ordered ceramic resistors instead of metal film for the build. This is kind of bad form considering all the mention of precision German engineering in the build docs, but I was too anxious to wait. Luckily, all the resisters measured ~2% and the pedal sounds great.

Modifications or part substitutions

None

Score:
1

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808/Heartbreak

Project: Stratus (Ibanez TS-9 Tube Screamer)
Variant: Robin Trower Overdrive

Build description

This took me about 4 times as long to debug as it did to build. For some reason I was a fungus and included both bass and mids mods so the drive circuit was bypassed. After much discussion on the forums, I finally figured it out: I had to keep only one of the two. I kept the bass mod and removed all the stuff from the mids mod and man this thing sounds killer! In Diode lift it’s really loud and crisp, but when I engage the Mosfet Clipping it turns into a roaring beast. This pedal is my go-to OD now, even more than the king of tone I built previously from Aion. Great job Kevin!

Modifications or part substitutions

Using the MOSFET Clipping, Bass/Fat mod. No part substitions, only had to stack some resistors to get the exact values.

CHITO
Score:
0

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HYBRID COMP

Project: Aurora (Ross/Dyna Compressor)
Variant: Ross / toggle 'Attack' switch mod

Build description

RESISTORS: Xicon brand metal film / no resistor value substitution on this project.

CAPACITORS: Solid polymers, low ESR electros, CDE silver mica cap on C1. HQ box caps used.

OP AMPS: AION specified ICs

MODS: Ross + AION ‘Attack’ toggle switch mod. I’ll install the ‘Attack’ pot once I find a right angle one.

EQUIPMENTS: Fender MetalHead & matching Fender MetalHead 4×12 cab / IBANEZ S5470Q guitar. PRS SE Korean-made Tremonti model single cut guitar. Only Aurora is connected.

TEST RESULTS: I haven’t heard nor used a Ross Compressor but I A/B’d this unit to my original 2-knob Keeley Compressor & sure enough, as I expected, Aurora does a better job than the latter and has more functionality too! I also noticed than i’m able to turn the Sustain knob to the full position with very minimal noise under normal Level setting and at stage level amp volume.

AION-designed PCBs are extremely well-thought-of & with simple & clear build instructions, making pedal building fun & easy.

Kudos to Kevin for an excellent re-design of this pedal based on the classic Ross Compressor, Dyna Comp & some Keeley mod!

Please share your build experience on the Aurora Compressor. Thanks!

Modifications or part substitutions

150pF CDE silver mica cap for C1

music6000
Score:
4

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Noble Drive

Project: Andromeda (Nobels ODR-1)
Variant: with Bass Pot

Build description

Built this as per Instructions with Bass Pot option.
Built in 125b Enclosure with Battery option.
This is a Great sounding pedal with the added bonus to dial the Bass to where it’s needed. If I want it to sound like the Original which I own, just crank the Bass fully Clockwise.

Awesome!

Modifications or part substitutions

125B Enclosure
Battery Snap

Score:
2

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Doge Fuzz

Project: Flare (Fuzz Factory)

Build description

Ge/Si switches took TS jack sockets place, so I had to mount them near AC jack socket, which was tight, but possible.

It’s my first one, very happy with results.

Modifications or part substitutions

Used two 3PDT switches to switch between germanium and silicon transistors.

Suryadip
Score:
0

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Morning Glory

Project: Cerulean (Bluesbreaker)
Variant: Morning Glory

Build description

Stock Morning glory with Bright Cut and fat mods, stock clipping and Mosfet clipping. this sounds soooo good! I’ve built the King of Tone variant as well, I personally prefer this to the KoT.

Coltonius
Score:
5

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3-in-1 GFX Console

Project: Refractor (Klon Centaur / KTR)
Variant: High Gain

Build description

I set out to build a pedal that could serve as a grab & go or a minimalist setup for jamming at home. So here it is, acid etched by Dan at ADD Pedals and in all of its glory!

Here’s the signal flow:
– Klon (Refractor PCB)
[FX LOOP]
– Mimik Delay (Madbean)
– Moodring Reverb (Madbean)

I think I’ve finally managed to incorporate all of my favorite tweaks into the Refractor part of the build, thanks to the helpful hints in the build doc and other industry greats!

Modifications or part substitutions

“High gain” mod (R10), Tone knob shift (R21, R23)

CHITO
Score:
1

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MOTHER OF ALL PEDALS

Project: L5 Preamp

Build description

ALL PARTS: HQ & all purchased from Mouser & Small Bear Electronics based on the Aion supplied BOM

OpAmps & ICs: OPA2134, OPA134, LM741P, CA3080

I was able to buy the 16mm 2.5KA Alpha pots from a UK distributor from a link supplied by Aion. Pots were not the right angle type though. I wired both of ’em to the PCB.

It took me a number of weeks to carefully sort parts, measure the values & populate the board. I had to wait for 3 back ordered items from Mouser for a long time but just in time when the Aion enclosure was ready to order. I had to buy a same size & value box cap (0.0082uF) & install ‘em while waiting for the last backordered cap so I could test the “Mother of All Pedals”. I’ll change those in a later time.

I used a shielded wire for the IN, OUT & LED pads / additional ground pads. I also added the experimental (100K) resistors for the off-board switches. It made the Channel switching very quiet although I could still hear a little bit of pop noise when the Bypass Mode switch is engaged/disengaged. I opted for the quieter Always On LED operation. On the other hand, the Bypass-Off LED operation confuses me because the 3 LEDs on the offboard switches don’t turn off at all and a loud pop is always present in spite of the experimental resistors.

Using the Signal Generator app on my iPhone 6 yielded mixed & inaccurate voltages so I used the ToneGenerator app instead but measuring the required 1kHz 30mV sine wave with a multimeter was hard to achieve. So, I just connected the iPhone output directly to the test points and adjusted the Distortion trimpot to 4.4VAC which was easily and accurately achieved. I know this isn’t the right way but it was my last resort.

TESTING EQUIPMENTS: Marshall JVM 205H head / Marshall 1960A cab / Fender Metalhead Amp & cab / IBANEZ S5470Q guitar. Jackson Japan-made Warrior guitar with genuine SD Invader humbuckers. Only Lab Series is connected — to the power amp input and alternately used as a pedal.

TEST RESULTS: A very quiet preamp for me as long as it’s used on an equally quiet power amp or is used as a pedal & connected to the front of a regular amp. The compressor / limiter & the distortion works fine for my rig. The 2 Channel tones sound great! Lots of headroom & very tweakable!

Thanks to Kevin for resurrecting the great Lab Series L5 Preamp amazingly reduced to Lilliputian specs.

Are you tired of carrying heavy rig to your gigs? Try the Mother of All Pedals, hook it up to the PA and tell us all about it……… Gulliver!

Zico
Score:
11

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Tube Screamer Me

Project: Stratus (Ibanez TS-9 Tube Screamer)
Variant: Stratus with bright switch and clipping mod

Build description

Loved this build, it was straight forward and shows what a high standard the project is. I enjoyed putting this together and I have since built several other Aion projects (Aurora x 2, Corvus and just stating a Refractor)
I went for the brightness and clipping mods

The sound of this pedal is amazing and I have lost this pedal to a mate and am building myself another.

Modifications or part substitutions

Playing around with op-amps currently using a JRC4558D but will try NE5532 and OPA2134