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---YAMAHA AX 497 --- HARMAN KARDON HK 970 --- ROTEL RB-1050
--- ROTEL RB-1070--

HARMAN KARDON HK 970

SPECIFICATIONS:
Audio
Stereo Mode
Continuous Average Power (FTC) per Channel : 2 x 70W @ 8 ohms
2 x 100W @ 4 ohms
Frequency Response (1W +1/-3dB): : 10 Hz -170 kHz
Signal-to-Noise Ratio (IHF-A) : 109 dB
High Instantaneous Current Capability (HCC) : ± 75 Amps
General
Power Consumption : 345W max
Power Requirement : AC 220 - 240 V/50 Hz
Dimensions
(H x W x D) : 110 mm x 441 mm x 389 mm
Weight : 10.2 kg
==============================================

YAMAHA AX-497

ToP-ART (Total Purity Audio Reproduction Technology)
Pure Direct
Super Audio CD und DVD-Audio Ready
Linear Damping
Overview of the technical data and equipment characteristics:

ToP-ART
CD/DVD Direct Amplification Circuit
Pure Direct Switch
Rec Out Selector
Analog audio (in-/outputs): 6/2
Speaker Selector: A, B, A+B
Phono Input
Gold-Plated Terminals: CD in
DIN Standard Power (4 ohms, 1kHz, 0,7%THD): 2 x 120W
Standard Power RMS (8 ohms, 20-20.000Hz): 2 x 85W
Linear Damping
Damping Factor (8 ohms,20-20.000 Hz): 240
Frequency Response: 10Hz - 100.000Hz ±1dB
Signal-to-Noise Ratio (CD): 110dB
Total Harmonic Distortion: 0,009%
Power Consumption: 220W
Standby Power Consumption: 2,7W
Remote Control Unit
Available Color: Titan or black
Accessories: Remote control, batteries, owners manual
Dimensions (W x H x D): 435 x 151 x 390mm
Weight: 9,1kg

==============================================


ROTEL RB-1050

Model: RB-1050
Title: High current two channel amplifier

Ideal for demanding custom installations, the ultra-stable RB-1050 combines audiophile sound quality and bullet-proof circuitry. A multi-mode amplifier, the RB-1050 develops 70 watts per channel for stereo reproduction. Individual sensitivity adjustments and auto on signal sensing circuitry allow use with a variety of distribution devices or processors. Buffered line level outputs allow multiple amplifiers to daisy chain from a single source. The toroid-based power supply and high damping factor ensure precise control of virtually all speakers. 12 volt trigger jacks and a detachable AC cord make this amplifier ideal for remote operated distributed audio systems. A front panel LED array shows clipping and protection modes for quick system analysis.
S P E C I F I C A T I O N S
Model RB-1050
Continuous Power Output
Power Configurations
Watts/Channel
all channels driven,
unbridged, 8 ohm load,
20 to 20k Hz, 0.06% THD 70w x 2
Total Harmonic Distortion
(20 Hz - 20 kHz)
cont. rated power
one-half rated power
one watt per channel 0.03%, maximum
0.03%, maximum
0.03%, maximum
Intermodulation Distortion
(at rated power, 60Hz:7kHz = 4:1 ) 0.03%, maximum
Damping Factor (8 ohms)
Input Impedance/Sensitivity 500
Input Overload Level
Frequency Response 1.0V / 33 kOhms
Signal to Noise Ratio (IHF A) 116 dB
Power Consumption: 250 watts
Power Requirements: 115 volts, 60 Hz (U.S. version)
230 Volts, 50 Hz (European version)
Dimensions (W x H x D): 430 x 92 x 350 mm
17 x 3 5/8 x 13 13/16"
Weight (net): 8.1kg / 17.86 lbs.
==============================================

ROTEL MODEL RB-1070

Model: RB-1070
Title: High current two channel amplifier

The newest interpretation of a classic Rotel award-winning power amplifier design, the RB-1070 continues the tradition of oversized toroidal transformer and high capacity power supply. In addition, Symmetrical Signal Trace circuit topology assures the precise interchannel timing clues necessary for pinpoint stereo reproduction. At 130 watts per channel (20 Hz to 20 kHz @ 0.03% THD into 8 ohms), the RB-1070 is more than capable of meeting the challenges of even the least efficient loudspeakers. An internal bridge option provides truly prodigious 330 watt output capability. Front panel LED status indicators show power, protection, and bridged mode for instant system analysis. And a separate input and output for 12 volt "trigger" signals increases flexibility by allowing the amplifier to be totally integrated into even the most complex remote-controlled systems.
S P E C I F I C A T I O N S
Model RB-1070
Continuous Power Output 2 x 130 watts
Power Configurations
Watts/Channel 2 x 130 watts
1 x 360 watts
all channels driven,
unbridged, 8 ohm load,
20 to 20k Hz, 0.06% THD -
-
-
Total Harmonic Distortion
(20 Hz - 20 kHz) -
-
cont. rated power
one-half rated power
one watt per channel 0.03%, maximum
0.03%, maximum
0.03%, maximum
Intermodulation Distortion
(at rated power, 60Hz:7kHz = 4:1 ) 0.03%, maximum
-
Damping Factor (8 ohms)
Input Impedance/Sensitivity 500
1.0 V / 33 kOhms
Input Overload Level
Frequency Response 5V
4Hz - 100kHz +0.5 dB, -3 dB
Signal to Noise Ratio (IHF A) 120 dB
Power Consumption: 400 Watts
Power Requirements: 115 volts, 60 Hz (U.S. version)
230 Volts, 50 Hz (European version)
Dimensions (W x H x D): 430 x 121 x 350 mm
16 15/16" x 4 3/4" x 13 3/4"
Weight (net): 11.9 kg, 26.25 lb [u][/u]

[ADN]

Harman Kardon HK 970 parerea mea.E o firma destul de serioasa.

[SoNic]

HK 970.
Yamaha ala ar fi ok daca ar fi 2 componente separate. Personal nu agreez sistemul.
Rotel ala se aude tare. Are finali in clasa D care economisec energia. Dar eu nu agreeaz decat finalii analogici cu componente discrete,asa sunt eu