Pioneer A-109 Balance control, Direct button/indicator, Loudness button/indicator, Phones jack

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PANEL FACILITIES

5BALANCE control

Should normally be left in the center position. Adjust balance if the sound is louder from one of the speakers. If the right side is louder, turn toward the L (left) position and if the left side is louder, turn toward the R (right) position.

NOTE:

This control does not operate when the DIRECT button is in the on position.

6DIRECT button/indicator

Use this button when you do not wish to pass the output from input terminal equipment through the various frequency ad- justing circuits (BASS, TREBLE, BALANCE, LOUDNESS).

On : The indicator lights: The signals passing through the input terminals are reproduced without passing through the various frequency adjusting circuits. This results in flat, pure sound which is a more faithful reproduction of the input source.

Off : The indicator goes off: The signal passes through the various frequency adjusting circuits.

7LOUDNESS button/indicator

Use when listening at low volume levels.

On : The indicator lights: Boosts low and high frequencies to give added punch to playback even at a low volume level.

Off : The indicator goes off: Should normally be left in this position.

NOTE:

This button does not operate when the DIRECT button is in the on position.

8TREBLE tone control

Use to adjust the high-frequency tone. The center position is the flat (normal) position. When turned to the right, high- frequency tones are emphasized; when turned to the left, high-frequency tones are de-emphasized.

NOTE:

This control does not operate when the DIRECT button is in the on position.

9BASS tone control

Use to adjust the low-frequency tone. The center position is the flat (normal) position. When turned to the right, low- frequency tones are emphasized; when turned to the left, low-frequency tones are de-emphasized.

NOTE:

This control does not operate when the DIRECT button is in the on position.

0PHONES jack

When using headphones, insert the plug into this jack.

NOTE:

The speakers continue to output sound even when head- phones are plugged into this jack.

To mute the sound from the speakers, press the SPEAKERS button to OFF.

-SPEAKERS button/indicator

Use this button to listen to the speaker system connected to the SPEAKERS terminals.

On : The indicator lights. Sound is heard from the speaker system.

Off : The indicator goes off. No sound is heard from the speaker system. Set to this position when listening with headphones.

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Contents 109 Risk of Electric Shock Do not Open POWER-CORD CautionFeatures ContentsInstallation Cassette deck Adaptor component ConnectionsConnecting the INPUT/OUTPUT Cords Connecting the Speaker CordsSpeaker Impedance Front Panel Panel FacilitiesBalance control Direct button/indicatorLoudness button/indicator Speakers button/indicator3 4 5 6 7 8 9 Rear PanelRecording Tapes Playback ProceduresOperations Before Beginning OperationsFor an adaptor component For a cassette deckSymptom Cause Remedy No power supplied to unit TroubleshootingAmplifier Section Specifications

A-109 specifications

The Pioneer A-109 is a well-regarded integrated stereo amplifier that stands out for its combination of quality sound, performance, and user-friendly features. Designed with audiophiles and music enthusiasts in mind, the A-109 showcases Pioneer’s commitment to delivering excellence in audio products.

One of the primary features of the A-109 is its powerful amplification capabilities. This model is equipped with a robust output stage, providing substantial power to drive a wide range of speakers. With 100 watts per channel at 8 ohms, the A-109 ensures that users can experience dynamic sound performance, whether they are listening to soft acoustic melodies or high-energy rock anthems. The amplifier’s low distortion levels further enhance the listening experience, delivering clean and accurate sound reproduction.

The A-109 incorporates advanced technologies designed to optimize audio signals. One such technology is the high-current drive capability, which allows for better performance with demanding speaker loads. Additionally, the use of high-quality components, including premium capacitors and resistors, contributes to improved audio fidelity and longevity. Pioneer's proprietary Circuit Design minimizes interference and noise, allowing for a clearer soundstage.

In terms of connectivity, the Pioneer A-109 is versatile. It offers multiple inputs, including phono, line, and digital inputs, making it compatible with a variety of audio sources, such as turntables, CD players, and streaming devices. The amplifier also features a headphone output, which allows for private listening sessions without sacrificing sound quality.

User accessibility is another strong point for the A-109. The amplifier comes with a clear and straightforward control layout that makes adjustments easy. The user interface includes features such as a smooth volume knob, tone controls for bass and treble, and a balance control for fine-tuning audio output. With its elegant design, the A-109 seamlessly fits into any audio setup, enhancing both functionality and aesthetics.

Durability and reliability are also crucial characteristics of the Pioneer A-109. Built with a sturdy chassis, this amplifier is designed to withstand the rigors of regular use while maintaining operability and sound performance. Overall, the Pioneer A-109 serves as an excellent choice for individuals looking to enrich their audio experiences through high-quality amplification, adaptability, and user-friendliness, making it a valued addition to any home audio system.
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