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Ibanez DM1000, Cutec CD424, MXR System II

These two are examples of how different minds tackle the same limitations. They're both based on the digital delay technology that has populated studios with expensive AMS units and the like.

They're pitched at the same chunk of the market, hence the near matching price tags, and are made possible by the availability of cheaper memory chips. What you do with your mass produced ICs after you've bought them is another matter.

Somewhere within spitting distance we review the new Roland SDE-1000 which has a recommended retail of £399... a few bob more perhaps, but it is the next step up the ladder from this pair, featuring some degree of programmability and further refinement of the delay electronics.

Now, no doubt Ibanez and Cutec will be upgrading their models, but for the time being anyone with £350 in his pocket may well spot these two as he strolls around the shops... before being mugged by One Two correspondents, so how do they shape up?

Early echo machines worked by recording a signal on tape, playing it back a fraction of a second later to create a repeat then returning that echo to the beginning of the circuit to loop round again and again. Digital delays store the signal on chips instead of tape and once the material's been electronically encoded in this way there's far more you can do with it. Flanging, chorusing and automatic double tracking are all based on delay techniques but producing long echoes AND retaining a wide frequency response requires a lot of high quality memory space.

The first section our optimistic signal meets in either manufacturer's device is the input stage. As you may want to treat anything from a vocal mike to a high output synth it's essential to have a way of adjusting the input sensitivity to get the maximum signal without distortion so reducing hiss and volume-loss further down the chain.

The Cutec has its sockets at the rear with levels switchable between -20dB (line) and +4dB (mike) plus a volume control at the front and a line of LEDs to monitor the signal strength. The Ibanez has a socket at the front, a volume control which pulls out to provide mike sensitivity, and its own LED display. I found the Ibanez harder to distort and the three red/two green LEDs were easier to judge than the Cutec's all red meter. First blood to Ibanez.

The DM1000 has a tone control, the CD-424 boasts bass and treble eq so wins back a house point. From here both machines take separate forks in the road. The Ibanez adds a modulation section offering width and speed controls to create chorus and flanging effects. The delay time is divided into eight sections on a rotary pot — 3.5/7/14/28/56/113/225 and 450 milliseconds — while a knob next door pans between the top and bottom limits of each section. The maximum delay time is 900 milliseconds.

The Cutec, on the other hand, concentrates its efforts on getting the greatest possible delay time — a healthy maximum of 1024 milliseconds. It also has a four figure LED readout for the delay and it's altered not by knobs but by buttons... one for up, one for down and a third that alters the adjustment speed from slow to fast.

Even on fast it's not as speedy to set as the Ibanez. Changes from slapback to long echo are a twist of the wrist on the DM1000, but several seconds of button pushing on the CD-424.

That said, the Cutec's display means you can reproduce echo times exactly, to a thousands of a second. Its rival relies on judging the position of a knob. That could be important if you're one of these people who plays against echo to create a rhythm.

The Cutec also introduces a sub-echo, a second delayed signal at one of eight preset times. The controls for it are on the rear panel. It can fill in gaps between the main echoes or provide a sort of echoed ADT effect when the sub and main times are almost identical.

A nice enough trick but for sheer usefulness, the Ibanez' modulation section takes the prize as the flanging and chorus sounds are both pretty good and if you're thinking of lashing out some cash to improve your home recording set up, the DM1000 could be a better investment if you're not already fixed up with such gadgets.

Finally, the Ibanez has two additional smarts up its sleeve that swing the score in its favour. A hold button takes whatever you've just played and locks it into the memory, repeating it without change or deterioration but still allowing you to layer extra material on top. It stays until you hit the hold button again, or there's a socket at the rear for a footswitch that does the same job. The Cutec can be coaxed into the same antics but it involves setting the feedback control at a critical level, and even so the results may still run away from you.

The Ibanez is also able to invert the phase of its output which allows for many more tonalities when used as a flanger, and makes reverb settings far more convincing. Digital delays are not too hot at reverb. Their very clarity means your ear always hears lots of short, distinct repeats rather than the seeming mush of sound that true reverb is. The inverted phase helps to blur those repeats but it's still not, in my ears, as good as a halfway decent spring line.

As far as noise goes, the Cutec is marginally ahead. The DM1000 seems to produce background row across the entire frequency range whereas the CD-424 just hisses at the top. However the Ibanez is much kinder to your signal's upper frequencies — the echoes sound brighter and clearer. The Cutec's treble control had to be turned up full to match the presence of the Ibanez when its tone knob was flat.

Still, it should be pointed out that both machines are well down on noise and well up on clarity compared to tape operated echoes or foot pedal delay lines. They're certainly high enough for the home recording market.


DM1000: £365
CD424: £386

So, considering the extra facilities, the hold button, the slight price difference and the phase inversion, I'd have to give the battle to the Ibanez DM1000 which just seems to make better use of its electronics. But if you already have flangers and so forth, and what you really want is a machine with long echoes and precision setting, the Cutec is yer man.

Alas and alack, someone has to lose, and in this case the MXR comes out as the woeful defeated in the battle with Roland and Korg.

The first initial shocker is that the price is almost twice as high as that of the SDE-3000, and the facilities are fewer. There's no programming, no display of modulation facts, and a scarcity of sockets for remote control or stereo operation.

All this could be forgiven, of course, if there was a superb set of figures as regards signal-to-noise, bandwidth, delay time and so forth. Though the MXR does achieve the mighty maximum of 3200 milliseconds, it actually treats those innocent instants no better than the Roland. In some cases, worse.

Delay time is set by a 31 click stop rotary control near the centre of the blue, white and black front panel. At the short extremes, the timing only jumps by a few milliseconds for each click. At the longest settings it's increasing by 40 or 50. All the values in between are available through a neighbouring fine adjuster.

The shortest time is seven milliseconds — not so impressive alongside the SDE-3000's 0.1. For a machine this price, I also found it irritating that there should be only a single output socket. If you wanted stereo effects you'd have to split off the original signal before it reached the MXR, convert the MXR to echo only by pressing the dry defeat button on the front panel, then balance the two halves at a later point.

In its favour the MXR has a massive LED display for delay time. You can read it from the other side of London. It's also more compact than the Roland or the Korg — higher at the front but not so extended at the rear.

Three LED lights behind the translucent panel give you a clue to how the MXR is stacking up its delay chips to reach the longer echo times, and what that's doing to the bandwidth. From seven milliseconds to 808 milliseconds, it gleams happily at a respectable maximum of 16kHz. Between 808 and 1616 it drops to the 8kHz limit and once the border into 1617-and-onwards-land is crossed, we're down to 4kHz which makes a noticeable difference, hacking off the upper frequencies. At least MXR own up to it.

The modulation LFO can run at a top speed of 20Hz, enough for most normal people, and the depth depends largely on the delay time. Thus an each way shift of two milliseconds around the 11 milliseconds mark converts to a substantial wobble of 15 milliseconds when the delay is cranked up to 120 — all without touching the depth control.

'Course you can adjust it, but I found myself being spoiled by the Roland's fine tuning and steady display. The MXR's chorus and flanging settings didn't have as much power as those of its rivals.



Unfortunately this review wears a frown, and in fact the MXR isn't a bad item of equipment. Just not good enough. MXR seem so concerned about doing it their way, they've failed to look at the opposition and realise there are useful lessons to be learned... programmability, LED input meters, extra remote facilities — these are the features anyone investing in a DDL will expect today. They won't take less.

Also featuring gear in this article

Cutec CD-424
(EMM May 83)

Ibanez DM 1000
(EMM May 83)

Browse category: Studio FX > Ibanez

Browse category: Studio FX > Cutec

Browse category: Studio FX > MXR

Previous Article in this issue

Roland Chorus Echo 555

Next article in this issue

Korg SDD3000

One Two Testing - Copyright: IPC Magazines Ltd, Northern & Shell Ltd.


One Two Testing - Nov 1983


Review by Paul Colbert

Previous article in this issue:

> Roland Chorus Echo 555

Next article in this issue:

> Korg SDD3000

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