Denon Integrated
Amplifier model PMA-550 is rated at 100 watts per channel, with both channels
driven into 8 Ω, and a total harmonic and intermodulation distortion below
0,005 percent. The unit may be direct-coupled from input to output by means of
a front-panel switch, and it incorporates electronic switching for input
sources, a separate record-out selector that permits the user to listen to one
source while recording another, a subsonic filter, defeatable tone controls,
and switching for two sets of speakers. Phono overload levels are 160
millivolts for the moving-magnet, and 8 millivolts for the moving-coil phono
sections. Phono Signal-to-Noise ratios are 89 dB for MM and 73 dB for MC.
Rated Output (both
channels driven):
100 W + 100 W (20 Hz
- 20 kHz, 8 Ω, T.H.D. 0,005%)
140 W + 140 W (1
kHz, 4 Ω, )
Total Harmonic
Distortion: less than 0,005%
Intermodulation
Distortion: less than 7 kHz/60 Hz :1/4,
0,008% (at amplitude output) equivalent to rated output)
Power
Bandwidth: 5 Hz - 100 kHz (IHF T.H.D.
0,035%)
Transmission
Characteristics: 1 Hz - 400 kHz +0 -3 dB
( at 1 W output)
Input
Sensitivity: 150 mV
Input
Impedance: 40 k Ω
Output
Impedance: 0,1 Ω ( 1 kHz)
Signal-to-Noise
Ratio (IHF A Network): 108 dB ( Input
terminals short circuited)
Output
Terminals:
Speaker : A & B load 4 - 16 Ω, A + B load 8 - 16 Ω
Equalizer Amplifier
Output (Rec Out Terminal):
Maximum Output
: 10 V (at 50 k Ω load)
Rated Output : 150 mV
Total Harmonic
Distortion : bellow 0,001% ( at 1 kHz, 8
V output)
Input
Sensitivity/Impedance:
Phono 1 (MM) : 2,5 mV/ 50 k Ω
Phono 2 (MC) : 125 µV/100 Ω
Tuner : 150 mV/40 k Ω
Aux, Tape : 150 mV/40 k Ω
RIAA Deviation:
Phono 1 (MM) : within ±0,2 dB ( 20 Hz - 100 kHz)
Phono 2 (MC) : within ±0,2 dB ( 20 Hz - 100 kHz)
Signal-to-Noise
Ratio (IHF A Network):
Phono 1 (MM) : 90 dB ( input terminals short-circuited at
2,5 mV inpit)
Phono 2 (MC) : 73 dB (input terminals short-circuited at 250
µV input)
Tuner, Tape, Aux
: 108 dB ( input terminals
short-circuited)
Tone Control
Bass : 100 Hz ±8 dB
Treble : 10 kHz ±8 dB
Equalizer
Subsonic: 18 Hz , 6 dB/oct
Loudness
Characteristics:
Low Frequency : 100 Hz +7 dB
High Frequency
: 10 kHz +6 dB
Power Source: AC 120 V, 60 Hz ; 220 - 240 V 50/60 Hz
Power Consumption:
740 W at maximum output (IEC)
Dimensions (W x H x
D): 434 x 132 x 407 mm
Weight: 13,5 kg
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