Akai AM-2250

Specifications

Power Amplifier Section

Rated Output Power  (2-channels driven): 

28 watts per channel at 4 Ω (minimum RMS)  from 20 to 20,000 Hz with no more than 0,3% (THD)

25 watts per channel at 8 Ω (minimum RMS)  from 20 to 20,000 Hz with no more than 0,2% (THD)

2 x 30 watts into 4 Ω at 1 kHz, with no more than 0,3% THD

2 x 30 watts into 8 Ω at 1 kHz, with no more than 0,2% THD

Power Bandwidth (IHF):  10 Hz to 40 kHz/8 Ω  (Total Harmonic Distortion: 0.2%)

Signal-to-Noise Ratio (IHF) ;

Phono:  Better than 75 dB

Aux:  Better than 95 dB

Residual Noise:  Less than 0.7 mV at 8 Ω

Channel Ssparation (lHF) Phono:  Better than 45 dB at 1,000 Hz

Damping Factor:  More than 50 (1 kHz, 8 Ω)

Output Speakers:  A, B (4 to 16 Ω)/A + B (8 to 16 ohms)

Output Headphone:  4 to 16 Ω

Preamplifier Section

Input Sensitivity/Impedance;

Phono:  3 mV/47 k Ω

Aux:  150 mV/l00 k Ω

Tuner:  150 mV/100 k Ω 

Tape  Monitor (PIN/DIN): 150 mV at 100 k Ω /  30 mV at 80 k Ω

Tape Rec Output Level/Impedance (PIN/DIN):  150 mV at 100 k Ω / 30 mV at 80 k Ω

Frequency Response

Phono (RIAA Standard):  30 Hz to 15 kHz  +1 dB, -1 dB

Tuner, Aux, Tape Monitor:  10 Hz to  40 kHz  +0 dB, -1 dB

Tone Control;

Bass:  ±8 dB at 100 Hz

Treble:  ±6 dB at 10 kHz

Loudness Control:  +9 dB at 100 Hz, +4 dB at 10 kHz (Volume control set at -30 dB position)

Miscellaneous

Semiconductors:  Transistors - 3,  Diodes - 4,  IC's - 2 

Power Requirements:  110/220/240V , 50/60 Hz

Dimensions (W x H x D):  380 x 130 x 220 mm,  (15 x  5,1 x 8,7 inches)

Weight:  6.2 kg,  (13.6 lbs)