A/DA Std-1 Stereo Tapped Delay Analog Synthesizer 1980s Black

Used – Very Good
$2,660.83CAD
+ $133.04CAD Shipping
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Solana Beach, CA, United States
Joined Reverb
2021
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About This Listing

This is a vintage 1980s A/DA Stereo Tapped Delay model "STD-1" rack effects unit with serial number 470607 is in good cosmetic condition, with some scratches on the body. The plug still works, all of the lights turn on, and I can feel the machine running when turned on/off. Unfortunately, because I don't have the relevant parts to test it with, I don't know if it is in perfect working condition, but I'd bet it is. I found it screwed in a Gator case among other equipment which indicates the previous owner seems to know what they are doing. This unit is missing only one cosmetic dial (from Delay, but it still can be moved) and one light bulb is absent (from Regeneration; see pictures). As is.
More information about this unit: The STD-1 is a tapped delay, meaning that it has multiple delay outputs at enharmonic taps in the bucket brigade delay (BBD). This is not intended to be an echo unit as the longest delay time is 55.5ms. Rather, it is designed for multi-voiced modulated delays (chorus, flange), doubling, ambience effects, and crude reverb. A garden variety analog delay is based around a BBD with a single output at the end of the chain. The STD-1 is a 3328 stage BBD with six outputs, one at the end of the chain and the other five at "taps" throughout the middle of the BBD chain hence the name "tapped delay". These taps are non-harmonically related at 1.3ms, 2.2ms, 4.6ms, 5.8ms, 8.3ms, 11.1ms outputs whose delay times can be increased by a factor of five. The purpose of non-harmonic taps was to emulate reverb as the multiple reflections of natural reverb are not a fixed time displacement. This is not just a conventional delay unit. Each of the six taps is assignable to the A/B (left/right) output field. Feedback is interesting in that it can be tapped at tap 1, 3, or 6 and the behavior is dependent on the delay time. At short delays it creates a resonance which is useful for changing the timbre of the signal, while longer delays it is designed to emulate reverb reflections. A high cut control reduces the high frequency content to emulate natural sounding echoes. The modulation section provides not one but two modulation sources. This system produces complex chorus effects such as ensembles, realistic doubling, random pitch shifts, and sweeping ambience. Subtle effects are amongst the popular choices and this box excels at them. The short delay taps are excellent for stereo imaging effects. When you add LFO modulation to produce chorus/flange effects, the STD-1 provides up to six modulated delays all at different time delays. This multi-voiced modulated delay configuration can sound a lot thicker and more complex than a conventional delay unit. This is one of the best flanging units due to the resonant flanging made possible with the feedback architecture. The regeneration system does nice work of making a tinny instrument into a fat resonant honker. The ambience effects do a good job of lifting an instrument out of a dense mix.

Product Specs

Listed6 months ago
ConditionVery Good (Used)
Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.learn more
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