Product Name: DULO 830
Device Type: Class-D pedal-format guitar amplifier
Amplifier Topology: Class-D power amp with transparent frontend
Channel Configuration: Single clean channel
Manufacturer: Zek Engineering Ltd
Form Factor: Compact pedalboard amplifier
EAN (GTIN-13): 3800600003800
DULO 830 is a transparent, single-channel Class-D guitar amplifier designed primarily as a pedal platform.
Unlike traditional guitar amplifiers, the frontend of the DULO does not add coloration, compression, or overdrive. Instead, it faithfully amplifies the tone generated by external pedals or multi-FX processors.
It functions similarly to using the return input of a standard amp head, but with added flexibility such as a bypassable 3-band EQ, Bright switch, cabinet simulator, and independent DI control.
Class-D power amp delivering up to 60W RMS @ 4Ω
Single clean channel (ideal pedal platform)
Bypassable 3-band EQ (Bass / Mid / Treble)
Presence control
Bright switch
Bypassable built-in cabinet simulator (XLR only)
¼” input and speaker output
XLR / DI line out with ground lift
Independent DI level control
Input gain control
Mute/Active footswitch
DULO Tone Enhancer® circuit
Simultaneous speaker and XLR usage
Compact, lightweight pedal format
DULO 830 is ideal for:
Pedalboard-based rigs
Fly rigs and compact touring setups
Studio recording via XLR output
Direct PA performance without traditional amp heads
Clean amplification for high-gain distortion pedals
Gain stacking setups
Stereo guitar rigs
Backup amplifier for professional players
Clean amplification platform
Overdrive / distortion pedal hosting
Multi-FX integration
Gain stacking chains
Direct-to-FOH live performance
Home recording setups
Hybrid digital/analog guitar rigs
¼” Input Jack
Input Gain Control
¼” Speaker Output
XLR Direct Output
DI Level Control
24VDC Power Input
Mute/Active Footswitch
LED Indicator (Red = Mute, Green = Active)
Bright Switch
EQ Bypass Switch
Bass Control
Middle Control
Treble Control
Volume Control
Presence Control
Cabinet Simulator Bypass
Ground Lift Switch
LED indicator GREEN
Power amp engaged
XLR and speaker outputs active
LED indicator RED
Power amp in standby
No signal at speaker output
XLR muted
Note: DULO automatically enters Mute mode after:
Power up
Unplugging input jack
Disconnecting power supply
Active only on XLR output
Can be bypassed via CAB SIM switch
3-band EQ can be fully bypassed
Bright switch operates independently
Two DULO units can be used for stereo amplification
Input Impedance: 1 MΩ
Direct Line Out: +4 dB (3.472 Vpp)
Power Output: 60W @ 4Ω • 30W @ 8Ω • 15W @ 16Ω
Power Supply: 100–240 VAC (via 24V external adaptor)
Amplifier Dimensions: 95 × 120 × 50 mm
Power Adapter Dimensions: 52 × 110 × 32 mm
Net Weight: 0.81 kg (incl. adaptor & cable)
Setup Procedure
Set Gain and Volume controls to minimum.
Set EQ controls to 12 o’clock.
Connect passive speaker cabinet (4–16Ω). IMPORTANT - Do NOT connect active speaker to the speaker output.
Connect guitar or pedalboard output.
Connect XLR if needed.
Connect 24V DC adaptor.
Connect the AC power (after the 24DC jack)
Press footswitch to activate.
Adjust Gain, Volume, DI Level as required.
⚠ Never connect active speakers or headphones to the speaker output.
⚠ Never apply 48V phantom power to the XLR input.
Check power (LED should be red or green)
Ensure Active mode (LED green)
Verify speaker impedance
Check input cable connection
Ensure not in Mute mode
Check DI level control
Confirm phantom power is OFF
Check AC adaptor connection
Verify power cable connection
Input jack not properly inserted
Incorrect adaptor voltage (<24V)
Likely ground loop
Use Ground Lift switch
Isolate other grounded devices
Q: Can DULO be used without a speaker cabinet?
Yes. The XLR output can operate independently.
Q: Can speaker and XLR be used simultaneously?
Yes.
Q: Does DULO add overdrive?
No. It is designed to be fully transparent.
Q: What is the purpose of the Gain control?
It adjusts input saturation and harmonic enhancement.
Q: Can I use phantom power?
No. 48V phantom power must never be applied.
The product complies with:
EN55013
European Directives 2014/30/EU
2014/35/EU
2017/2102 (RoHS)