Casio CTK-220L manual Specifications, General, Electrical

	SPECIFICATIONS
GENERAL
Number of keys:	49
Polyphonic:	12-note
Preset tones:	100
Transpose:	F# ~ C ~ F: half-note
Auto-rhythms:	25, Tempo: Adjustable, 216 steps (40 ~ 255), initial value: 120
Accompaniment:	CASIO Chord, Fingered, Fill-in pattern, Synchro start
Song bank:	20-tune
Digital volume control:	10 steps (0 ~ 9), initial value: 7
Tuning control:	440 Hz ± 50 cents
Built-in speakers:	10 cm dia. × 1 (Output: 2 W)
Terminals:	Headphone Jack, Stereo mini Jack [Output impedance: 70 q, Output voltage:
	3.6 V (rms) MAX]
Auto power off:	Approximately 6 minutes after the last operation
Power source:	2-way AC or DC source
	AC: Required optional AD-5 AC adaptor
	DC: 6 AA size batteries
Power consumption:	7.7 W
Dimensions (HWD):	85 × 771 × 324 mm (3-3/8 × 30-3/8 × 12-3/4 inches)
Weight:	3.4 kg (7.5 lbs) excluding batteries

ELECTRICAL

Current drain with 9 V DC:	160 mA ± 20 %
No sound output
Maximum volume	840 mA ± 20 %
with white keys C1 to G2 pressed in Synth-Lead 1
Volume: Maximum
Phone output level (Vrms with 8 ohm load):	98 mV ± 20 %
with key C2 pressed in Synth-Lead 1
Speaker output level (Vrms with 4 ohm load):	2000 mV ± 20 %
with key F4 pressed in Synth-Lead 1
Minimum operating voltage:	6.3 V

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