Aion Comet / DS-1, modded vintage version

jcpst

Well-known member
Build Rating
5.00 star(s)
Appreciation of the DS-1 is relatively new to me. By the time I picked up an axe in the late 90s, I equated that $40 orange pedal to awful tone. I’ve learned a lot about pedals since then. I knew there had to be something special about it since I like recordings featuring the DS-1.

This is my 2nd one with the TA7136PA. I removed the clipping options switch, and the clipping doides. I also bumped up Q2’s emitter resistor from 22 Ohms to 1k. Details about that change are in section 9 of the DS-1 article on electrosmash.

With single coils, I was getting a nice clean boost up to noon on the GAIN. The full travel on GAIN is useful, it doesn’t just max out after a certain point. Fully clockwise, there’s still enough to do some chuggy palm muting. And it’s way louder- the way I like my gain pedals.

When I was taking the diodes out, I melted two film caps together. That’s a first! 😆 The enclosure is Alexandrite from SBP. I like the way it looks so I didn’t add any art. It looks way cooler in person, like the gemstone it’s named after. Also, 3 knob gain pedals don’t need labels.

I love the way this sounds. I recommend giving the mods a try if you’re curious.


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Nice! I remember playing one for the first time thinking it sounded like arse…got Keeley to mod it and thought it sounded great. That was in 96 I believe and i somehow still have the receipt!
 
My first pedal was an early 90s DS-1 with this same IC. Of Course I had bad tone back then, but Kurdt used one so...he knew bad tone too 🤣

I've built like 3 diy versions, two with the original preamp IC and one with modern dual opamps. I don't really like either but they have their uses, solid build either way. Points deducted for the noob mistake on the cap, you know better(should have replaced them 🤷🤣🤦)
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Love the enclosure color, the DS1 can get good tone, tons of mods, one I like is the bigmuff diodes in the second transistor of the original circuit.

Do you have a source for TA7136PA?
 
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