The T-Rex Space Master is a reverb pedal with a boost function built in. T-Rex describes it as delivering "authentic stereo reverb sounds and a master boost function," so a player can add a room, spring or hall to their sound and push an amp or the front of a chain with the same stompbox. The company pitches its reverb sounds as "useful and natural reverb sounds," aimed at players who want reverb that sits in the mix rather than dominates it1.
A stereo reverb with a boost
The Space Master offers four reverb algorithms. T-Rex says "the four algorithms will go from amp-like spring reverbs to spacious hall reverbs," covering the range from a short, twangy spring tank sound to long, open halls. Because the pedal is stereo, the reverb can spread across a stereo rig or two amps rather than collapsing into a single mono channel1.
The boost side is a master boost function, controlled by its own knob and switch alongside the reverb controls. For players who already own a dedicated boost pedal such as the T-Rex Karma or Tonebug Booster, the Space Master folds that role into the end of the board, after the reverb rather than before it1.
The controls
| Control | What it does |
|---|---|
| On/Off | Turns the effect on and off |
| Reverb | Reverb level control |
| Boost | Boost level control |
| Decay | Reverb decay control |
| Mode | Selects the reverb algorithm |
| Boost switch | Engages the boost function |
All controls are listed on T-Rex's product page for the pedal1.
Spillover bypass
The Space Master has a selectable spillover bypass. As T-Rex puts it, "there's a switch for selecting whether the reverb tails will ring out when you bypass the effect." With spillover set to let tails ring, switching the pedal off leaves the decay finishing naturally behind your dry sound; set the other way, the tail stops when you bypass. It is a practical choice for players who switch reverb mid-song and do not want an abrupt cut1.
Power and battery
| Specification | Value |
|---|---|
| Power supply | 9/12 VDC, 2.1mm barrel plug, center negative |
| Current draw | 85 mA at 9 VDC |
| Battery type | 9V battery (Alkaline) |
| Battery life | 4 to 6 hours |
| Max. input level | 3Vp-p |
| Input impedance | 500K stereo |
| Output impedance | 1K Ohm |
All specifications from T-Rex's product page1.
The Space Master draws 85 mA at 9 VDC, which is well above what many simple daisy-chain supplies share comfortably per output. A regulated supply with enough current per output, or the pedal's 9V alkaline battery option, are the two ways T-Rex lists to power it1.
Battery life is listed at 4 to 6 hours, so a battery suits occasional use, while a supply makes more sense for a permanent board spot1.
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Questions
Does the T-Rex Space Master run on a battery?
Yes. T-Rex specifies a 9V alkaline battery, and the pedal can also run from a 9 or 12 VDC power supply with a 2.1mm barrel plug, center negative. Battery life is listed at 4 to 6 hours, so a supply is worth considering for regular use.
How long does a battery last in the Space Master?
T-Rex lists battery life at 4 to 6 hours on a 9V alkaline battery. That is short by pedal standards, which reflects the current draw of 85 mA at 9 VDC. For practice sessions a battery works, but for gigs and long rehearsals a power supply is the practical choice.
What does spillover bypass do?
The Space Master has a selectable spillover bypass, described by T-Rex as a switch for choosing whether the reverb tails ring out when you bypass the effect. With spillover on, a trailing reverb continues naturally after you switch off; with it off, the tail is cut when bypassed.
Is the T-Rex Space Master stereo?
Yes. T-Rex describes the Space Master as delivering authentic stereo reverb sounds, and the input is specified at 500K stereo impedance. Running it in stereo lets the reverb spread across two amps or a stereo rig.
What power supply does the Space Master need?
T-Rex specifies a 9 or 12 VDC supply with a 2.1mm barrel plug, center negative. Current draw is 85 mA at 9 VDC, so a standard daisy chain may not be enough depending on what else shares it. It also runs on a 9V alkaline battery.
Sources (1)
- → T-REX EFFECTS ← Pedals for guitar and bass players!, T-Rex Effects
