Technical specification – Blackstar HT-DUAL User Manual
Page 4

7
6
11. Speaker Emulated Output
This output emulates the tonal characteristics of a guitar speaker 
cabinet and provides a natural valve overdrive tone for connection 
to a recording device or mixing desk. Always use a good quality 
screened guitar lead.
12. Input
Plug your guitar in here. Always use a good quality screened guitar 
lead. 
13. Valve Viewing Window
Through this grille you can see the ECC83 valve at the heart of your 
pedal. 
WARNING: Do not attempt to remove the fixing screws or grille. No
user serviceable parts inside.
14. Channel 1 On/Off LED
When the GREEN LED is on Channel 1 is on. When the LED is not 
on, Channel 1 is off. 
15. Channel 1 On/Off Footswitch
Press this switch to turn Channel 1 on or off.
16. Channel 2 On/Off LED
When the RED LED is on Channel 2 is on. When the LED is not on, 
Channel 2 is off. 
17. Channel 2 On/Off Footswitch
Press this switch to turn Channel 2 on or off.
18. DC Inlet
For the input of the 22V DC / 1.1A adapter supplied. Always use a 
Blackstar approved adapter.
Technical Specification
Power: 22V DC
Maximum Current Draw: 1.1A
Controls: Gain 1, Gain 2, Bass, Middle, Treble, ISF, Level 1, Level 2
Valve: ECC83 / 12AX7
Switches: Channel 1 On/Off Switch, Channel 2 On/Off Switch, 
Clean/Crunch Switch (Channel 1)
Indicators: Channel 1 On/Off, Channel 2 On/Off, Power On/Off 
(Valve Backlight LED)
Jacks: Input, Output, Emulated Output
Input Impedance: 1MΩ 
Output Impedance: < 1KΩ 
Dimensions (mm): 160 x 119 x 80
Weight: 1.2kg
DC Adaptor: ADA Series supplied
HT-DUAL
PURE VALVE DISTORTION
1
18
2
10
11
15
14
9
12
17
16
13
3
4
5
6
7
8
English
English
