Photos and specs Stereo amplifier Onkyo A-9050
Description stereo amplifier, Onkyo A-9050
The a-9050 is included in the budget range full amplifier Onkyo.
The device is made in classic style. The thickness of anti-resonant metal chassis is 1.6 mm. the Front panel and mounted in the center of the volume knob is made of aluminum. In the left part of the facade is a power button and a standby mode, and select key speaker. There are regulators of timbres and balance. To the right is the button to activate Direct mode, the functions of bass boost Phase Matching Bass and an input selector, which is equipped with LEDs (9 PCs) that indicates the ports are involved at the moment. In the lower right corner is a mini-Jack for portable player and a 6.3 mm headphone out.
In Onkyo A-9050 uses a three-stage scheme of amplifying transistors of the Darlington. Involved proprietary technology of broadband signal amplification WRAT, using a shallow negative feedback and significantly increasing the quality of sound. There is a DIDRC circuit, reducing noise and interference in the HF range. For digital sources provided onboard Wolfson WM8718 DAC (24 bit/192 kHz). The model boasts a power supply with a massive EI transformer and two capacitors with a total capacity of 20,000 UF that ensures a capacity of 75 watts per channel (at 8 Ohms). The Phase Matching Bass technology enhances the bass section and thus does not introduce distortion in the midrange.
The inputs on the rear panel: four line RCA connectors MM-Phono stage, two coaxial, optical. A linear RCA connectors, preamp and a Jack for the subwoofer. The speaker has four pairs of terminals. Other switching: 3.5 mm Jack for connection via the system bus, allowing to control several Onkyo components with one remote. There is a grounding terminal. Three slide switches are used to organize connections on the system bus. There is a selector impedance speakers (4 Ohm or 8 Ohm) and a slider that translates the a-9050 in Auto Standby mode, in which the amplifier goes into sleep mode if no signal for 30 minutes.
Onkyo A-9050 is able to build a three-dimensional scene with accurate image location in space. Its sound is transparent, cleanliness and attention to detail. The model has all chances to become a bestseller in the niche of budget Hi-Fi components.
Features stereo amplifier, Onkyo A-9050
The three-stage amplification circuit to the transistors arlingtonsky
WRAT technology and DIDRC
Built-in Wolfson WM8718 DAC (24 bit/192 kHz)
Features stereo amplifier, Onkyo A-9050
| Rated output power | 75 W per channel (8 Ohms, 1 kHz, 0,08% THD, 2 channels loaded, IEC) |
| THD | 0,08% (1 kHz, 1 W) |
| The damping ratio | 60 (8 Ohms, 1 kHz) |
| Input sensitivity/input impedance | 175 mV/33 kω (line input), 4.8 mV/47 kOhm (input MM Phono stage) |
| Output sensitivity/output impedance | 0,175/2.2 kω (RCA record output) |
| Frequency range | 10 Hz - 100 kHz ( 1 dB, -3 dB, LINE 1) |
| Management of voices | ± 14 dB, 100 Hz (bass), ± 14 dB, 10 kHz (treble), 8 dB, 80 Hz (PM Bass) |
| The signal-to-noise ratio (line input) | 110 dB |
| The signal-to-noise ratio (input MM Phono stage) | 80 dB |
| The speaker impedance | 4 – 16 Ohms (A or B), 8 – 16 Ohms (A B) |
| Built-in DAC | Wolfson WM8718 (24 bit/192 kHz) |
| Inputs | four line RCA, line mini-Jack connectors MM-Phono stage, two coaxial, optical |
| Outputs | 6.3 mm headphone, RCA for the record, pre out PRE OUT (RCA), subwoofer output |
| Other | RI 3.5 mm plug to connect on the system bus, grounding terminal |
| The Phono stage | for MM cartridges |
| Power consumption | 160 watts |
| Power consumption in standby mode | 0.3 W |
| Remote control | is able to work with other Onkyo components |
| The speaker | 4 pairs gold-plated terminals |
| Dimensions (WxHxD) | 435х139х330 mm |
| Weight | 8.2 kg |
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