Our products and user manuals are subject to a process of continuous development. We there‐ fore reserve the right to make changes without notice. Please refer to the latest version of the user manual which is ready for download under www.thomann.de. HB-20MFX | HB-40MFX Guitar Combo...
Personal consultation For personal consultation please contact our technical hotline. If you have any problems with the device the customer service will Service gladly assist you. 1.2 Notational conventions This manual uses the following notational conventions: HB-20MFX | HB-40MFX Guitar Combo...
NOTICE! This combination of symbol and signal word indicates a pos‐ sible dangerous situation that can result in material and environmental damage if it is not avoided. HB-20MFX | HB-40MFX Guitar Combo...
Page 8
General information Warning signs Type of danger Warning – high-voltage. Warning – danger zone. HB-20MFX | HB-40MFX Guitar Combo...
Within the device there are areas where high voltages may be present. Never remove any covers. There are no user-serviceable parts inside. Do not use the device if covers, protectors or optical components are missing or damaged. HB-20MFX | HB-40MFX Guitar Combo...
Page 10
(for example after transport at low outside temperatures). Dust and dirt inside can damage the unit. When operated in harmful ambient conditions (dust, smoke, nicotine, fog, etc.), the unit should be maintained by qualified service personnel at regular intervals to prevent overheating and other malfunction. HB-20MFX | HB-40MFX Guitar Combo...
Page 11
The plasticiser contained in the rubber feet of this product may possibly react with the coating of your surface and after some time cause permanent dark stains. In case of doubt, do not put the rubber feet directly on the surface and use a suitable underlay if neces‐ sary, i.e. felt pads or similar. HB-20MFX | HB-40MFX Guitar Combo...
Controls for gain, volume, treble, mids, bass, FX and master volume Mini jack connections for AUX / line input and headphone output Bluetooth audio receiver for playing backing tracks Digital guitar tuner with LED display HB-20MFX | HB-40MFX Guitar Combo...
Take care when running the cables to prevent tripping hazards. NOTICE! Possible property damage by magnetic fields Loudspeakers produce a static magnetic field. Therefore, maintain an appropriate distance to devices that can be adversely affected or damaged by an external magnetic field. HB-20MFX | HB-40MFX Guitar Combo...
Connections and controls Connections and controls Front panel HB-20MFX | HB-40MFX Guitar Combo...
Page 15
Input gain control. 5 [VOLUME] Control to adjust the volume of the instrument channel. In combination with effects, [VOLUME] can be considered as a dry signal level control. 6 [TREBLE] Treble control. 7 [MIDDLE] Mids control. HB-20MFX | HB-40MFX Guitar Combo...
Page 16
Button for pairing or decoupling a Bluetooth device. Press the button. The blue LED in the button flashes, indicating that the device is ready for pairing. When establishing the connection via the Bluetooth device, search for “HB-20MFX GiT Amp” or “HB-40MFX GiT Amp”. When paired, the LED lights up constantly and you can play audio files via the device.
Page 17
[MASTER] control affects the USB signal. Headphones output (3.5 mm mini phone socket). When headphones are connected, the internal loudspeaker and the connection for external loudspeaker boxes are automatically muted. HB-20MFX | HB-40MFX Guitar Combo...
Page 18
The [PANEL] LED changes to green and shows that the sound set with the controls and buttons is active again. You can also press [PANEL] at any time to switch to the sound set with the knobs and buttons. HB-20MFX | HB-40MFX Guitar Combo...
Page 19
18 1/4" jack socket to connect external speaker boxes. The total impedance of the speakers connected here must not fall below 4 Ω. If this connection is used, the built-in loudspeaker is switched off. 19 Power cord. HB-20MFX | HB-40MFX Guitar Combo...
70 Hz to 10 kHz Signal-to-noise ratio 75 dB Total harmonic distortion (THD) 0.5 % (clean sound) Bluetooth audio receiver Standard Version 5.0 Frequency of operation 2.4 GHz … 2.48 GHz Transmission power 2 dBm (typ.), 4 dBm (max.) HB-20MFX | HB-40MFX Guitar Combo...
Page 22
55 W Supply voltage 230 V 50 Hz Dimensions (W × H × D) 350 mm × 355 mm × 170 mm 400 mm × 405 mm × 210 mm Weight 6.5 kg 9.0 kg HB-20MFX | HB-40MFX Guitar Combo...
Page 23
Technical specifications Ambient conditions Temperature range 0 °C…40 °C Relative humidity 20 – 80 %, non-condensing HB-20MFX | HB-40MFX Guitar Combo...
Page 24
Further information Channels Reverb Effects processor Storable presets Yes, 4 × External effects loop Line input Line output Recording output MIDI port External speaker connector Headphone connection Standby function Foot switch connector Incl. foot switch HB-20MFX | HB-40MFX Guitar Combo...
180°. Since the interference affects both cores equally, by subtracting the phase-shifted signals, the interfering signal is completely neutralized. The result is a pure signal without any noise inter‐ ference. HB-20MFX | HB-40MFX Guitar Combo...
Page 26
Plug and connection assignment 1/4" TS phone plug (mono, unbalanced) Signal Ground, shielding Three-pole 1/8" mini phone jack (stereo, unbalanced) Signal (left) Signal (right) Ground, shielding HB-20MFX | HB-40MFX Guitar Combo...
Dispose of this device through an approved waste disposal firm or through your local waste facility. When discarding the device, comply with the rules and regulations that apply in your country. If in doubt, consult your local waste disposal facility. HB-20MFX | HB-40MFX Guitar Combo...