The Valeton Coral MDR is a digital multi-effects pedal that combines modulation, delay and reverb in a single compact stompbox. Valeton describes it as a multi-use pedal featuring 16 high quality modulation/delay/reverb/combo effects, with 16 carefully selected reverb algorithms in one stompbox1. Pedal of the Day, reviewing it in 2019, called it "small, affordable and boasts a slew of sounds," noting it "fits into the palm of your hand and costs less than 100 bucks"2.
Valeton lists the Coral MDR as discontinued on its own product page, so it is no longer in current production1.
What it does
The Coral MDR covers three effect families in one box. Pedal of the Day lists the available modes as Chorus, Phaser, Flanger, Tremolo, Delay, Reverb, Air and Ambient, each with two differing groups, A and B, selected by an on-board A/B push button2. That gives players access to chorus, phaser, flanger, tremolo, delay and reverb sounds without dedicating a separate pedal to each.
Valeton describes the circuit design as digital, with a special design buffer bypass circuit that the company says keeps your sound pristine, and great tone with low noise level1. The pedal is housed in an aluminum-alloy die cast casing that Valeton says withstands wear and tear; Pedal of the Day likewise describes "a heavy duty aluminum die cast casing"12.
One setup detail worth knowing: you can turn the delay trail on or off by holding the Bypass switch while powering up the pedal2.
Controls
The Coral MDR keeps its front panel simple. Valeton specifies MIX, DECAY and TONE knobs for detailed effect control, plus X and Y knobs for adjusting effect details, and a Tap Tempo function for real time effect speed/delay time control1.
| Control | What it does |
|---|---|
| X, Y | Adjust effect details; what they change depends on the mode12 |
| MIX | Blend of effect and dry signal1 |
| DECAY | Effect decay control1 |
| TONE | Tone shaping1 |
| A/B button | Selects between the A and B groups of each mode2 |
| Bypass switch | On/off; held at power-up to toggle the delay trail; held during play to enter Tap Tempo2 |
Pedal of the Day explains how the knobs behave in practice: "The Mix, Depth/FB Time and X/Y controls adjust different parameters, depending on which mode you're in, like Volume, Speed, Feedback, Tone, Resonance, Filter, Delay Time, Brightness and much, much more"2. In other words, the same knob does a different job in Chorus than it does in Delay, so the pedal rewards a quick check of the mode you are in before tweaking.
For tempo-based effects, you can hold down the Bypass switch to enter Tap Tempo mode seamlessly, which Pedal of the Day says enables you to set the tempo hands-free at a moment's notice2.
Power and size
The Coral MDR runs on DC 9V power and draws 180mA of current, per Valeton's specifications1. That draw is high enough that a low-current daisy-chain output may not run it reliably, so a supply with adequate current per output is the safer pairing.
It is a small pedal: 93.5mm deep, 42mm wide and 52mm high, weighing 150g1. The narrow width means it sits on a board without crowding neighbors, and the die cast enclosure is built for the road1.
Where it sits in Valeton's range
The Coral MDR is built as a compact digital pedal with a straightforward control layout: Valeton gives it MIX, DECAY and TONE knobs for detailed effect control, and describes the circuit as a digital design1. The company also points to a special design buffer bypass circuit that it says keeps your sound pristine, and an aluminum-alloy die cast casing that withstands wear and tear. On sound, Valeton's own description is great tone with a low noise level1.
Videos
Pedal of the Day and Valeton
RobzFreak Guitar
Georgianna Marie Wilson
Questions
Is the Valeton Coral MDR discontinued?
Yes. Valeton's own product page lists the Coral MDR as discontinued, so the pedal no longer appears in the company's current lineup. Units may still be found secondhand or from remaining stock at dealers, but Valeton is no longer producing it. Players looking for a current Valeton multi-effects option would need to look at the company's newer pedals instead.
What power supply does the Valeton Coral MDR need?
The Coral MDR runs on a DC 9V power supply and draws 180mA of current, according to Valeton's product page. Because of that current draw, it is worth checking that any power supply or daisy chain you use can deliver enough current at each output. The page does not mention battery power, so plan on a dedicated supply output.
Does the Valeton Coral MDR have tap tempo?
Yes. Valeton says the Coral MDR has a Tap Tempo function for real time control of effect speed and delay time. Pedal of the Day's review adds that you can hold down the Bypass switch to enter Tap Tempo mode seamlessly, which lets you set the tempo hands-free at a moment's notice.
Is the Valeton Coral MDR true bypass?
No. Valeton describes the Coral MDR as using a special design buffer bypass circuit, which the company says keeps your sound pristine. That makes it a buffered bypass pedal rather than a true bypass one, something to keep in mind if you are building a large pedalboard with strict bypass preferences.
How big is the Valeton Coral MDR?
Valeton lists the Coral MDR at 93.5mm deep, 42mm wide and 52mm high, weighing 150g. That is compact enough that Pedal of the Day described it as a pedal that fits into the palm of your hand, and it takes up little room on a pedalboard.
Sources (2)
- Coral MDR, Valeton (www.valeton.net), 2026-07-27
- Valeton CRL-1 Coral MDR Modulation Delay Reverb, Pedal of the Day, 2019-06-03