Korg SDD-XXXX Delay Rack Unit History

Discussion in 'The Rack Space' started by Lavely, Jun 30, 2020 at 2:28 PM.

  1. Lavely

    Lavely Silver Supporting Member

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    Delving into rack delays...I see that Korg released an SDD-1000, SDD-2000 and SDD-3000. Then, they also have an SDD-1200 and SDD-3300. I'm wondering what the release dates were for each of these (really, which was first, which came later) and differences among them?

    SDD-3000 (1983) - 1023ms, special preamp, 9 programmable presets
    SDD-1000 (1984) - 1024ms at full frequency, 2048ms at half frequency - all knobs
    SDD-2000 (1985) - 1092ms at full frequency, 4368ms at reduced frequency - 64 programmable presets, MIDI, sampling

    SDD-1200 (DATE?) - 1024ms (doubles when delays in series), dual delay lines
    SDD-3300 (DATE?) - 500ms per line (triples when delays in series), three delay lines


    Second Topic:

    If I buy a separate pedal with the "magical SDD-3000 preamp" in it (looks like a few exist) and put this in front of any of the above, will I miss anything else about the SDD-3000? For example, the SDD-2000 looks like a more feature-heavy delay - will the preamp pedal and the SDD-2000 give me what the 3000 provides in terms of delays?

    EDIT - The answer, per the posts below, is NO! The 2000 has more differences than just the preamp.
     
    Last edited: Jul 1, 2020 at 11:40 AM
  2. Anje

    Anje Supporting Member

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    I've had a SDD-3000 & 2000; still have the 3000.
    The 3000 has more features to sculpt your delay sound (waveforms, filters...), and has those awesome famous input/output preamp sections. It is the one to have to me.
    I love my 3000, never really cared for the 2000 in comparison honestly. MIDI recall & sampling features are really the only added value of the later, and it doesn't compare to it's bigger brother otherwise IMHO.
    And there are options to remotely recall presets via MIDI on an old 3000 too, so didn't really bother keeping the 2000.

    I can't comment on the "preamp on a pedal + other delay" option as I've never compared it to the real thing.
    Key point to me beyond the "sound" itself is would it provide the same level of boost or I/O level (mis)matching possibilities? That is one of the keys of the old SDD3K magic to me, boosting the front end of and old tube amp with one is a thing of beauty.
     
  3. mike_lawyer

    mike_lawyer Member

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    I have owned both units before. The SDD-3000 has that sweet magic of the preamp and stellar modulation section. The SDD-2000 can be made to sound close, but the modulation section is different and it lacks the preamp.

    An SDD-3K pedal in front of a delay can get close, but it is not the same as the rack unit sound-wise. I tried doing that with a Strymon Timeline, and it is in the ballpark but not the same.

    The SDD-3000 pedal also can sound in the ballpark, but it is not the same as the rack unit. I have A/B'd them side by side, and the rack unit was the clear winner.
     
  4. Lavely

    Lavely Silver Supporting Member

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    In terms of Modulation, it looks like the only thing the 3000 does that the 2000 does not is allow you to select the Waveform of the Modulation from among (1) triangle wave, (2) square wave, (3) random wave or (4) envelope follower. Or, are you saying the Modulation itself, as an effect, sounds different in the 3000 than in the 2000?

    And, to @Anje point, the 3000 has HP & LP filters.

    Seems like better/different functionality, for sure.
     
  5. slowerhand

    slowerhand Supporting Member

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  6. drfrankencopter

    drfrankencopter Member

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    I love the filters in the SDD-3000...I use them more than the much beloved 'preamp'.

    I just took a look at the block diagrams for the SDD-3k vs 2k, and here's a notable differences beyond the preamp/output amp:

    The SDD-2000 uses a compander, whereas SDD-3000 uses a high frequency emphasis. At least, according to the block diagram. On the circuit diagram of the 3k I couldn't really see it, as it looks like the volume control and feedback summing are done by the same op-amp, and it might also be set up as a high pass filter. The SDD-2000 schematic I have is fuzzy, but it looks like the compander chip also does the feedback summing. It's probably some kind of VCA with some pre-set functionality.

    I don't see filters in the feedback loop of the SDD-2000, other than low pass filters which I assume are for anti-aliasing/anti-imaging.

    I would imagine the difference between emphasis and companding would make some notable sonic differences between the units. Similar to the difference between Dolby, and dbx noise reduction.
     
  7. Lavely

    Lavely Silver Supporting Member

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    Sounds like more than just the preamp is different...thanks @drfrankencopter for the detailed view!

    Probably best to hold out for a 3000. Now, I'm on the hunt for one!
     

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