The Maestro Discoverer Delay is an all-analog delay pedal that uses bucket brigade device (BBD) technology, the classic circuit approach behind most vintage analog delays. Gibson, which owns the Maestro brand, describes it as delivering "classic, warm, and inviting delay sounds"1. Delay time runs from 20 ms to 600 ms, set by a single knob, and a toggle switch adds modulation to the repeats1.
It launched in 2022 at $159 as part of Gibson's five-pedal revival of the Maestro name2, alongside the FZ-M Fuzz-Tone, Invader Distortion, Ranger Overdrive and Comet Chorus3.
An analog bucket brigade delay
Bucket brigade delays pass your signal down a chain of capacitors inside a BBD chip, and each "bucket" of charge takes time to move, which is what creates the delay. The Discoverer uses this technology rather than digital processing, so the repeats degrade in a way players associate with vintage analog delays: GuitarPlayer's reviewers noted that "the repeats also have a crispness to them that remains present throughout the decay envelope instead of becoming progressively grungier"3.
The delay time range of 20 ms to 600 ms covers short slap-echo through to what GuitarPlayer called ambient delays3. Delicious Audio characterizes the pedal as an intuitive reissue of a Maestro delay from the early '60s, with the same Delay, Sustain and Mix control layout5.
Controls and modulation
The control set is simple: Delay, Sustain (feedback) and Mix knobs, a Mod On/Mod Off toggle, and the bypass footswitch3. Two trim pots inside the pedal adjust the modulation rate and width6.
| Control | What it does |
|---|---|
| Delay | Sets delay time, 20 ms to 600 ms1 |
| Sustain | Sets the number of repeats3 |
| Mix | Blends dry and delayed signal6 |
| Mod On/Off toggle | Adds modulation to the repeats3 |
| Internal trim pots | Adjust modulation rate and width6 |
| Footswitch | True bypass, lights the bugles in the Maestro logo when on1 |
The modulation is the pedal's most distinctive feature. Guitar World's Trevor Curwen placed it "in the EHX Deluxe Memory Man tradition" of switchable modulation on an analog delay6. As shipped, he found the modulation "a floaty otherworldly sound that combines well with the delay. It's not unlike a rotary speaker effect," and the internal trim pots can pull it back to a mild chorus or push it toward a detuned warble with wayward pitch-shifting6. Gearnews described the range as running from slight tape-like pitch flutter to full-on wobbling modulation7. GuitarPlayer's reviewers found that activating the modulation "adds chorusing to the delay, which provides a chewy, lo-fi texture," while warning that the trim pots are "potent functions that can alter the modulation to the point of becoming sound-effecty if you get carried away tweaking" them3.
Power and hardware
The Discoverer runs on a 9V battery or a regulated 9V DC power supply with a 5.5 x 2.1 mm plug wired center negative, drawing 61.3 mA1. Gibson advises removing the battery when the pedal will be stored for long periods to prevent leakage and damage1. The housings in the Maestro Original Collection open clamshell-style to make battery changes easy3.
Other hardware details from Gibson's product page1:
- Dimensions: 5.04 in x 3.45 in x 2.5 in (128.0 mm x 87.6 mm x 63.5 mm)
- Weight: 1.27 lb net (576.1 g), 1.64 lb gross (743.9 g)
- LED indicators: red, yellow and blue bugles in the Maestro logo light when active
- Power-on switch incorporated into the input jack
- For a limited time, a free three-month subscription to the Gibson App comes with purchase
Part of Gibson's Maestro revival
What reviewers said
Reviews of the Discoverer were broadly positive, with one recurring criticism.
- GuitarPlayer (Art Thompson and Craig Hockenberry) praised its quiet operation and crisp repeats, concluding: "If you're shopping in the delay end of the stomp-box pool, the Maestro Discoverer Delay is worth a listen."3
- Guitar World (Trevor Curwen) highlighted the modulation as the standout feature, noting its Deluxe Memory Man lineage and the flexible trim pot range6.
- MusicRadar's review team confirmed the true bypass switching but found a downside: "Discoverer Delay repeats break up/down too soon, becoming a chirrup if you're at high feedback settings."8
- Guitar.com (Richard Purvis) reviewed it as part of the Original Collection as "a bucket-brigade delay with switchable modulation."9
Gibson's own product page shows an overall rating of 4.0 out of 5 from one review1.
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Questions
Is the Maestro Discoverer Delay true bypass?
Yes. Gibson lists the switching type as true bypass, and the true bypass footswitch also lights up the red, yellow and blue bugles in the Maestro logo when the pedal is active. MusicRadar's review of the Maestro Original Collection confirms true bypass switching.
What is the maximum delay time of the Discoverer?
The delay time range runs from 20 ms to 600 ms, set by the Delay knob. GuitarPlayer's reviewers described it as traveling from short slap-echo to ambient delays of up to 600 ms, which is typical territory for a bucket brigade analog delay.
How do you adjust the modulation trimpots on the Discoverer?
Inside the pedal there are two internal trim pots, one for modulation rate and one for width. Guitar World found the stock setting gives a floaty, rotary-speaker-like sound, and the trimpots can be dialed back toward a mild chorus or pushed toward detuned warble. GuitarPlayer cautioned that pushing them too far makes the effect sound-effecty.
Is the Discoverer Delay an Echoplex?
No. It is a bucket brigade analog delay, not a tape echo. Maestro is the company that released the original Echoplex tape delay, and the Discoverer is a modern reissue in the spirit of the company's early '60s pedals, but it uses BBD chips rather than tape.
Is the Maestro Discoverer analog or digital?
It is fully analog. Gibson's product page lists the signal processing as all-analog, using bucket brigade device (BBD) technology, and both Guitar.com and GuitarPlayer describe it as a bucket-brigade analog delay with switchable modulation.
Sources (9)
- Maestro Discover Your New Favorite Analog Delay Pedal, Gibson (www.gibson.com)
- Gibson revives Maestro as a fully-fledged pedal brand with five new stompboxes, Guitar.com, 2022-01-18
- Maestro Discoverer Delay Review, GuitarPlayer (www.guitarplayer.com), 2022-04-06
- discoverer delay by Maestro, RockBoard (PedalPedia), 2026
- Maestro Discoverer Delay, Delicious Audio, 2022-01-18
- Maestro Discovery Delay review, Guitar World, 2022-05-16
- Gibson re-launches Maestro Electronics with Original Collection pedal range, gearnews.com, 2022-01-18
- Maestro Original Collection pedals review, MusicRadar, 2022-05-25
- The Big Review: Maestro Original Collection pedals, Guitar.com, 2022-02-10
