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Description
The CH-1 is a compact chorus effects pedal covering tones from gentle shimmer to heavier modulation. Rate and depth knobs set the speed and amount of modulation, while the effect level knob blends the chorus with the dry signal. The EQ knob acts as a low-pass filter on the effect sound only: lower settings give a warmer, richer tone and higher settings a brighter one.
The pedal has two output jacks, A and B. In stereo use they carry separate wet and dry signals, so sending them to two amps spreads the sound across the room. This design is modelled on the stereo chorus circuit of the Roland JC-120 Jazz Chorus amplifier. The pedal uses buffered bypass.
It runs on a 9 V alkaline battery, which is included, or on a PSA-series AC adaptor sold separately. A CHECK indicator shows battery status. The pedal carries a five-year manufacturer warranty.
Specifications
- Brand
- Boss
- Model
- CH-1
- Category
- Effects and pedals
Controls
- Knobs
- DEPTH, RATE, EQ, E.LEVEL
- Footswitch
- Pedal switch
- Indicator
- CHECK indicator (battery check)
- Bypass
- Buffered bypass
Audio
- Nominal input level
- -20 dBu
- Input impedance
- 1 M ohm
- Nominal output level
- -20 dBu
- Output impedance
- 1 k ohm
- Recommended load impedance
- 10 k ohms or greater
Connectivity
- Input
- INPUT jack: 1/4-inch phone type
- Outputs
- OUTPUT A/B jacks: 1/4-inch phone type
- Power input
- DC IN jack
Power
- Power supply
- Alkaline battery (9 V, 6LR61); AC adaptor (PSA series: sold separately)
- Current draw
- 55 mA
- Battery life (continuous use)
- Alkaline: Approx. 6 hours
Physical
- Width
- 73 mm (2-7/8 inches)
- Depth
- 129 mm (5-1/8 inches)
- Height
- 59 mm (2-3/8 inches)
- Weight (including battery)
- 420 g (15 oz)
In the box
- Included
- Leaflet; Alkaline battery (9 V, 6LR61)
- Options (sold separately)
- AC adaptor: PSA series
- Warranty
- BOSS five-year warranty
Documents
PDF User manualQuestions
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