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Description
1981 pedal 1981 Inventions DRVThe 1981 Inventions DRV has become one of the most talked about pedals of the last few years, and for good reason. The DRV is a highly nuanced preamp distortion pedal designed by 1981 founder Matthew Hoopes in collaboration with Jon Ashley of Bondi Effects. Through four years of abandoned prototypes and circuit tweaking, the pair emerged with a truly special and truly original circuit design. Nominally based around an early '80s large box, 'white
The 1981 Inventions DRV has become one of the most talked about pedals of the last few years, and for good reason. The DRV is a highly nuanced preamp/distortion pedal designed by 1981 founder Matthew Hoopes in collaboration with Jon Ashley of Bondi Effects. Through four years of abandoned prototypes and circuit tweaking, the pair emerged with a truly special and truly original circuit design. Nominally based around an early '80s large box, 'white face' ProCo rat, the DRV takes on a life of its own, with a musically rich and extremely versatile sound. The level of flexibility that can be achieved from the three knob layout is highly intuitive and interactive, covering a huge range of diverse drive sounds from lower gain, almost 'transparent' tones, to heavier, fuller distortion that can almost spill over in to fuzz.The DRV has plenty of clarity and harmonic-rich warmth, with a midrange tuned specifically for guitar that adds a whole lot of clarity to almost any instrument. The DRV has a unique dynamic range and sensitivity, where instead of going clean to slightly overdriven, it goes from clean to slightly distorted, with the preamp and distortion sounds meeting and interacting extremely naturally.
The 1981 Inventions DRV is hand built and wired in the USA with vintage style through-hole components on the PCB. The DRV features off-board jacks and power enclosed in a uniquely subtle folded steel box. Each unit is personally tested and hand numbered. See the full 1981 Inventions collection available at No.Tom Guitars here.
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4.5 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
It works!
Size: 1 Count (Pack of 1)
My 2005 Jetta failed the inspection and my mechanic said (after clearing the engine light) that I should drive the car for 20 min highway and 20 local. We've tried that the whole day but out of three lights on his device only 1 went away. Next day the light engine came back. After not being happy with the explanation offered by him (a family friend) that I should keep driving it until we get lucky I went online and found CRC 05063. Followed the instruction (one bottle on full tank of gas). Before my tank was under 3/4, engine light went off!! At half tank I went and did the inspection - IT PASSED! I am really impressed!
Update August 2015!
I have been using this product for 2-3 years now and if it is not working for you please read. In July I have used the first bottle and took my 2005 Jetta for inspection. It failed. Ordered a second bottle and it failed again. My mechanic said keep driving. Did 200 miles in one day and nothing. Decided to take matters in my own hands and ordered Autel MaxiScan MS300 ($18, it allows you to read and delete codes). There were two faults - EVAP and 2nd something about Oxygen. Went online and this is the first time I heard about driving cycles. These are steps that you have to follow so that your car's computer can start measuring all the parameters needed for the test. Driving cycles are not exact science but I tried to follow the instructions as much as I could and after just 20 minutes (10min city and 10min highway) ALL the parameters were set and I passed the emission test with flying colors! So, just before you give a comment about CRC like "tried and didn't work" be aware that there are other things you have to take into account.
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Reviewed in the United States on July 1, 2013
★★★★★ 3
My car did not pass!
Size: 1 Count (Pack of 1)
My car didn't pass. However, the company CRC sent me a reimbursement check.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Pass Again
Size: 1 Count (Pack of 1)
This product never fails (no pun intended), I have been using this for the last 10 years my car has never failed a smog test. I highly recommend this and that you use it correctly. You will not be disappointed.
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Reviewed in the United States on March 27, 2026
★★★★★ 5
Really Helps-Especially for Star Station Tests-Haven’t Failed Since Using in Two Older Vehicles
Size: 1 Count (Pack of 1)
Ever since the new CA State mandate that older cars and trucks have to go to a Star Emissions Station for their smog check I have become very familiar with Guaranteed to Pass. The first year of getting smogged under the new regulations my 1995 truck barely failed. It’s a tougher series of tests and it really sucks to have to pay more for a smog test that is designed to get older cars and trucks off the road that would normally pass a regular smog check. It came at a bad time, having just been laid off and losing my health insurance and income and trying to figure how to come up with money for truck repairs to get my registration renewed so I could be a viable job candidate in the really bad job market of a few years back (and still today, may I add.) But that is a whole other issue that gets my blood boiling. So back to my experience with Guaranteed to Pass. My 1995 Ford Truck barely failed and I mean barely according to the emission numbers so I had the manifold cleaned out, used premium gas for a tank and added Guaranteed to Pass. Having two gas tanks was handy as I could switch the tank to a fresh tank without the remainder of the additive in it for the retest. It passed with flying colors.
So for our other older 1993 mini-van and the truck in the few successive years since I always run the premium gas with Guaranteed to Pass in the tanks before the smog check. We’ve had the van and truck tested 3-4 times combined since and they pass every time. So I’m sold on Guaranteed to Pass and will vouch for it.
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Reviewed in the United States on November 14, 2016
★★★★★ 5
Excellent quality
Color: Black
Fits perfectly to my bmw x3 2017 2.0L
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Reviewed in the United States on May 16, 2026