Review: PSP L’otary — Rotary Speaker Emulation


Hey, everyone. Mark Marshall here from and

Today, I’m going to be demoing PSPaudioware’s new plug-in called “L’otary.”

Now, this is a Leslie emulation plug-in. I’ve used several over the years and haven’t been completely satisfied. I feel like often, they are just over-exaggerated chorus plug-ins. 

PSPaudioware has done something really special here, and they have really managed to capture the true essence of miking a real Leslie cabinet, and they’ve given you a lot of controls to fine tune your sound.

I’m going to play some examples that I recorded for you here. Now, I used a Stratocaster into a Princeton Reverb with a Cascade Fathead II ribbon mic that was about an inch out from the center of the grille.

Now, the dry tone is going to sound like this. This first example is definitely in the style of some Beatles and Blind Faith. That’s some of my first introductions to those effects.

Here’s the dry signal.

[guitar plays]

I’m going to put in the plug-in now.

[guitar plays, with Leslie emulation]

You’ll notice that when we turn the effect on that there was a little bit more air that was added to the sound on top of the warble from the spinning rotor and drum.

For this next example, I used a Les Paul and was doing a more melodic thing with a little bit more gain coming from the amp. I wanted to give you a good example of what using the L’otary in this sort of situation would sound like.

Let’s listen to the sound with no L’otary on it.


Let’s add in the effect now.

[guitar plays, with Leslie emulation]

For this last example, I wanted to do something a little less conventional. So, I recorded an acoustic guitar much like in the style of the late 60’s, early 70’s Led Zeppelin, up to mid-70’s Cat Stevens, and then I created a couple of sends. So, one of the sends is going to a PSP Springbox, which is a spring reverb, and the other one is going to the L’otary.

I was just kind of tucking the L’otary Leslie effect under the acoustic guitar. It creates a really cool sound.

Let’s listen to just the dry acoustic first.

[acoustic guitar]

I’m going to add in the reverb now.

[acoustic guitar playing with reverb]

Now, we’re going to add in the L’otary.

[acoustic plays with all effects]

Mark Marshall

Mark Marshall

Mark Marshall is a producer, songwriter, session musician and instructor based in NYC. More at
Smiley face
  • sdiedrichsen

    you’re using Logic Pro, which has hands-down the best rotor cabinet plug-in on board. What PSP has done with that plug-in is nowhere close to a Leslie, not the UI, not the sound.

    • Mark Marshall

      Everyone is entitled to their own opinion. But, how many real Leslie’s have you used? I’ve used quite a few. I don’t find the logic emulation to come close. It’s not horrible by any means, but lacks a lot. Compared to the real ones I’ve used and been in the presence of, PSP has come much closer. Plus, since when does the look of the UI have any influence on the sound? I would rather something sound amazing then looks fancy.

    • sdiedrichsen

      So far, I’ve used a 122 with a Hammond B3, a 710 converted to single channel with a Hammond A100, a 815, 722 and 760 (not at the same time) with a Hammond B-200. I recorded some Leslies as well, so I hope I know, what I’m writing about. Actively I’m using the Vintage B3 in Mainstage / Logic and I’m very happy with it. You need a very good sounding loudspeaker system, but the results are great.
      The UI thing doesn’t bother me so much, it’s this smallness (is that a a word?) in the sound. Logic’s Rotor cabinet has real stereo, it’s really there. You need to check it, use the new mode (“Real cabinet”). Why not doing a video comparing those two?

    • Mark Marshall

      Ah, I haven’t used L’otary into any amps or PA. I’ve just been using it as plug in for mixing. For mixing I prefer it because I find it fits in the mix better. However, I can see there would be a difference for live usage. You def. want a lot of “weight” onstage. I will try the “real cabinet” mode. Sounds like a good idea to do a comparison.