switching is independent of the composite/S video signal and does not support on-screen display messages.

ext 5.1: Selects the multi-channel output signal from a DVD player or external decoder source (such as DVD- Audio) connected to the ext 5.1 input as the active input.

NOTE: No ext 5.1 audio signal is available from the headphones socket, or the Tape, Video 3 or Video 4 outputs.

Tape Monitor: Selects the output from a tape recorder when playing back tapes or monitoring recordings being made through the Tape sockets. Press the Tape Monitor button once to select it and again to return to the normal input selection.

The Tape Monitor function does not override the current input selection that is sent to the tape outputs. When the Tape Monitor is selected, you are listening to the signal that is coming back into the Tape Input jacks. The cur- rently selected source is still being sent to the Tape Out where it can be recorded. This function enables you to check on a recording that you are making without affect- ing the recording process. When Tape Monitor is selected, the button will remain lit until Tape Monitor is disengaged again.

[12] Surround Mode Button

With the Surround Mode button the available surround sound modes can be selected. The selected surround mode is permanently indicated in the display area and is also shown for 3 seconds in the large text section of the display. The Surround Mode button scrolls through the available surround sound modes when pressed repeatedly.

The surround modes are:

Stereo: The Stereo mode provides straight two channel listening. With an analog source, it bypasses all process- ing. With a digital input, only the bass-management filtering is applied.

Hall: In the Hall Surround mode, a realistic level of ambiance is added to a normal stereo source such as a CD or FM radio.

Pro Logic II: Dolby Pro Logic II is the new advanced ver- sion of Prologic, Dolby’s original surround matrix with cen- ter channel output. Prologic II has enhanced imaging and wider bandwidth surround signals than original Pro Logic.

Dolby Pro logic II is intended for use with most movies and television programs that are designed to be listened to using Prologic decoding. In addition to the standard Dolby Prologic II, the GTP-860 supports three enhanced versions of Prologic II processing, which were designed for specific types of programs. “Prologic II Music” mode was designed for use with regular old stereo recordings and it can utilize all you speakers in your system when listening to a CD. “Prologic II Movie” is an enhanced version of Prologic II decoding with settings optimized for movies and televi- sion. “Prologic II Panorama” is a version of Prologic II that is intended for use with Movie playback that spreads the images from the front left and right speakers around to the surround speakers. “Prologic II Matrix” creates a surround sound signal from mono sources.

5 ch Stereo: This mode is designed for use with stereo pro- gram material. It is designed to get maximum output from all your speakers. The rear speakers are driven with the same signal as the front left and right, while the center speaker is a monophonic summation of the front speakers.

With any of the Digital Inputs, the GTP-860 automatically recognizes if the selected source carries a Dolby Digital™ or DTS™ signal. Dolby Digital and DTS have six indepen- dent channels available in total: Left, Center, Right, Surround Left, Surround Right and an “Effects Channel” (Subwoofer). With either Dolby Digital 5.1 or DTS digi- tal input, the Stereo, Dolby Pro Logic and Hall surround modes cannot be selected.

The Dolby Digital signal allows for several channel configurations. Most two-channel Dolby Digital recordings will allow the Pro Logic listening mode to be applied.

[13] Bass/Treble Controls

The GTP-860 is fitted with Bass and Treble tone controls to adjust the overall tonality of your system. The 12 o’clock position is ‘flat’ with no boost or cut and a detent indicates this position.

Rotate the control clockwise to increase the amount of Bass or Treble. Rotate the control counter-clockwise to decrease the amount of Bass or Treble. These controls affect the Left and Right Front channels. The Tone controls do not affect recordings made using the Tape or Video line outputs.

10 ADCOM GTP-860 OWNER’S MANUAL

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Adcom GTP-860 owner manual Surround Mode Button, Bass/Treble Controls
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GTP-860 specifications

The Adcom GTP-860 is a versatile audio component that seamlessly combines a high-performance stereo receiver and a multi-source digital preamp. Known for its robust features and reliability, the GTP-860 caters to both audiophiles and casual listeners, making it a staple in many home audio systems.

One of the standout features of the GTP-860 is its extensive connectivity options. With multiple analog and digital inputs, including optical and coaxial connections, users can easily integrate various devices such as CD players, Blu-ray players, and game consoles. The unit also includes a dedicated phono stage, providing support for vinyl enthusiasts. This wide range of connectivity ensures that users can enjoy high-quality audio from virtually any source, making it an adaptable choice for diverse audio setups.

The GTP-860 is equipped with advanced technologies that enhance its audio performance. It utilizes a high-quality digital-to-analog converter (DAC) that supports high-resolution audio formats, allowing for a richer and more detailed listening experience. The unit also features a built-in FM and AM tuner, enabling users to access their favorite radio stations with ease. The user-friendly interface and intuitive remote control further enhance the listening experience, allowing users to navigate through various settings and inputs effortlessly.

Another notable characteristic of the GTP-860 is its robust build quality. Constructed with premium materials, the unit not only looks sophisticated but is also designed to withstand the rigors of regular use. The solid chassis helps minimize vibrations, contributing to improved audio clarity and performance.

The Adcom GTP-860 is also known for its excellent sound staging and imaging capabilities. The unit is designed to reproduce a wide soundstage, allowing listeners to experience music as it was intended by the artists. The precise imaging ensures that every note and instrument can be distinctly heard, providing an immersive listening experience.

In summary, the Adcom GTP-860 is a feature-rich audio component that blends functionality and performance. With its versatile connectivity options, advanced audio technologies, and high build quality, it stands out as a compelling choice for anyone looking to elevate their home audio setup. Whether for casual listening or for critical listening sessions, the GTP-860 delivers on all fronts, making it a valuable addition to any audio system.
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