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At A Glance
- Input Connector Type
- Female XLR Pin 2 Hot
- Mic Preamp Input Impedance
- 330 Ω Balanced
- Unity Gain Input to Output
- Mic Level control set to 8 o'clock position
- Max Input Level at Unity
- -3 dBu
- Mic Level Gain
- +0 to +40 dB
- Mic Preamp Phantom Power
- 45V
- Output Connector Type
- Male XLR Pin 2 Hot
- Output Impedance
- 100 Ω Unbalanced / 200 Ω Balanced
- Playback Unity Gain
- Loop Level knob set to 12 o'clock position
- Maximum Output Level
- -9 dBu
- Sample Rate
- 46.8 kHz/24-bit
- Max. Individual Loop Time
- 10 minutes (stereo)
- Frequency Response
- +0/-3 dB 20-20 kHz
- Signal to Noise Ratio
- -100 dB
- Power Consumption
- < 2 Watts typical
- Current Draw
- < 200 mA typical / < 400 mA max
- Power Supply
- PS0913DC-01
- Power Supply Input
- 100 VAC-240 VAC, 50/60 Hz
- Power Supply Output
- 9 VDC 1.3 A
- Dimensions
- 4.8" (L) x 3.4" (W) x 2.1" (H) / 122 mm (L) x 87 mm (W) x 54 mm (H)
- Product Weight
- 0.6 lb / 0.27 kg
- Shipping Weight
- 0.9 lb / 0.41kg
- Mic Preamp
- dbx
DigiTech positioned the JamMan Vocal XT (JMVXT-U) as a compact looper designed specifically for vocalists, extending the JamMan looper family beyond guitar-oriented units. It accepted XLR microphone signals directly, processed them through a built-in dbx microphone preamplifier, and returned the signal via a balanced XLR output — making it a self-contained mic preamp and looper in a single small unit.
The preamp section offered up to +40 dB of mic-level gain with 45V phantom power for condenser microphones. The unit recorded at 46.8 kHz/24-bit with a frequency response of +0/−3 dB across 20–20 kHz and a signal-to-noise ratio of −100 dB. Maximum individual loop time was 10 minutes in stereo. The JamSync feature allowed the JMVXT-U to synchronize automatically with compatible JamMan units — specifically the Vocal XT, JamMan Express XT, and JamMan Solo XT — enabling independently recorded but tempo-locked loops across multiple devices. A Silent Clear function allowed a recorded phrase to be erased without requiring playback first. The unit drew fewer than 200 mA typical and was powered by the PS0913DC-01 supply, accepting 100–240 VAC worldwide input and outputting 9 VDC at 1.3 A.
Owners requiring service, calibration, or replacement parts — including the PS0913DC-01 power supply or XLR connector components — should consult a qualified audio technician familiar with signal-chain hardware of this type.
STRAIGHT TALK
What Stands Out
Keep In Mind
From the people who own them
Nothing in The Vault is for sale. These records exist so the instruments stay documented after the manufacturer moves on — and the most useful part of that record is what owners add to it.
Owner photos
Put yours on the record.
The catalog shot showed one finish, under one light, a long time ago. Yours has been played. Photos from owners are what the next person finds when they are trying to identify a part, match a finish, or work out whether the one they just bought is really what the seller said it was.
What do you know about this one?
Specs only go so far. What actually fits, what breaks first, what the factory got right and what everyone ends up changing — that lives with the people who own them, not in a datasheet. Post what you know and it stays on this page for whoever comes looking next.
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Gear Help, Handled
From spec questions to full builds — players who have lived this gear since 2007.
Since 2007
Fit & Compatibility
- Bridge, tuner, and nut fit confirmed for your guitar
- Pickup and electronics compatibility checks
- Pedal power and amp/cab impedance matching
Mods & Upgrades
- Upgrade paths for the guitars you already own
- Wiring, routing, and hardware swap guidance
- Advice from people who actually do the mods
The Vault
- Discontinued and EOL guitars kept on record
- Specs, history, and known part compatibility
- Share your builds and mods with the community


