Front & Rear Panels

Front Panel

(A-9755 only)

1 2 34 5 6 7 8 9 0 AB C

This illustration is for A-9755.

For detailed information, refer to the pages in parentheses.

APOWER switch (14)

This is the main power switch. When set to OFF, the A-9755/A-9555 is completely shutdown. When set to ON, the A-9755/A-9555 can be set to On or Standby.

BSTANDBY indicator (14)

This indicator lights up when the A-9755/A-9555 is in Standby mode (Only the remote controller can be used to set the A-9755/A-9555 to Standby).

CPHONES jack (15)

This phone jack is for connecting a standard pair of stereo headphones for private listening.

DSPEAKERS selector (14)

This control is used to select which speaker set out- puts sound. You can switch the output speaker set between four options: OFF, A, B and A+B.

EBASS control (16)

This control is for adjusting the level of bass sounds.

FTREBLE control (16)

This control is for adjusting the level of treble sounds.

GLOUDNESS button and indicator (16)

This button is for reinforcing both treble and bass when the volume is turned down low. Pressing the button turns the LOUDNESS function on and off.

The indicator lights up when the LOUDNESS func- tion is on.

HVolume control and indicator (15)

This control is used to adjust the volume of the A-9755/A-9555.

The indicator flashes while the sound is muted. It flashes more quickly if any of the speakers is left unconnected.

IPURE DIRECT button and indicator (16)

This button turns the PURE DIRECT function on and off. The indicator lights up when the PURE DIRECT function is on.

JPOWER AMP DIRECT (MAIN IN) button and indicator (17) (A-9755 only)

When the A-9755 is used as a power amplifier with a separate preamp, this button is used to set the MAIN IN function. The indicator lights up while the MAIN IN function is on.

KInput selector (15)

This control is used to select from the following input sources: LINE, HDD, PHONO, CD, TUNER, TAPE, or MD.

LInput selector indicator (15)

These indicators show the currently selected input source.

MRemote control sensor (9)

This sensor receives control signals from the remote controller.

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Onkyo 9555, A-9755 instruction manual Front & Rear Panels, Front Panel

A-9755, 9555 specifications

The Onkyo 9555 and A-9755 are two notable models in the world of high-fidelity audio, representing a blend of technological innovation and classic design principles that appeal to audiophiles and casual listeners alike.

The Onkyo 9555 integrates a powerful amplifier with advanced features suitable for both home theater systems and stereo setups. One of its main highlights is the incorporation of a high-current amplifier design, which ensures optimal driving power for various speakers, making it capable of delivering clear sound even at high volumes. With a RMS power output typically ranging from 50 to 100 watts per channel, it provides a robust performance that can fill larger rooms with immersive audio.

Equipped with a range of input options including digital coaxial and optical inputs, as well as traditional analog connections, the Onkyo 9555 offers flexibility for connecting multiple audio sources. The inclusion of a built-in phono stage also allows for direct connection of turntables, catering to vinyl enthusiasts who appreciate the warmth and character of analog sound. The model features customizable equalization settings, enabling users to tailor their listening experience to personal preferences or room acoustics.

Similarly, the A-9755 carries forward Onkyo’s commitment to superior sound quality, further enhancing user experience with its sophisticated circuitry. Notably, the A-9755 employs a highly precise 192 kHz/24-bit DAC, elevating digital audio playback to a new level of clarity and detail. This is complemented by a variable loudness control, which adjusts frequency response based on listening levels, ensuring consistent sound quality whether you're enjoying soft background music or cranking up the volume for a party.

Both models are designed with solid build quality and user-friendly interfaces, often featuring rotary knobs and clearly labeled buttons that enhance usability. Additionally, the aesthetically pleasing design fits well in both modern and traditional environments.

In conclusion, the Onkyo 9555 and A-9755 are strong contenders in the high-fidelity audio market, offering powerful amplification, versatile input options, and advanced technologies catering to diverse listening preferences. Whether for critical listening or casual enjoyment, these models are worthy of consideration for anyone looking to elevate their audio experience.