11Bass button

When Tone Control is on (by pressing the By- pass button), displays a Bass adjustment dis- play. Use /to set the desired Bass level.

12Treble button

When Tone Control is on (by pressing the By- pass button), displays a Treble adjustment dis- play. Use /to set the desired Treble level.

13Sleep button

Sets the sleep timer to power the GTP-870HD off after a specified length of time (30~180 minutes).

14Backlight button

Turns the remote control backlight on.

•The backlight times out after ~8 seconds.

15Mute button

Mutes the audio for the selected input.

16Volume /buttons

Adjust the volume level for the selected input from -80 dB to +18 dB.

17Setup button

Displays the GTP-870HD Setup menu on the front panel and on-screen displays.

18Menu button

Programmable button. In Main mode, displays the Setup menu. Can be taught to display the Disc Menu on your DVD player.

19Select button

Displays the Picture Format menu. Use /to select a preset format (Auto, Full, Zoom, Squeeze, or Non Linear Stretch) to suit your display device and source material.

•Also use the Select button to make selections in setup menus and on-screen displays.

20Stop button

Programmable button. Can be taught to stop playback of the selected source component.

21Mode button

Steps through all available surround modes (e.g., Dolby Digital, DTS, etc.) for the selected input.

•The Mode button overrides the preset sur- round mode for the selected input.

22TH-EQ button

Turns Theater EQ sound on and off.

23Ch-Trim button

Displays the Channel Balance menu, which al- lows you to make custom adjustments to indi- vidual speaker levels during playback. A test tone option is provided.

24Tune -/+ buttons

In Tuner mode, manually scans the selected tuner band, or selects stored presets.

25Test button

Plays a test tone for a few seconds in each speaker to aid in setting channel balance.

26St/Mon button

In Tuner mode, switches between Stereo and Mono reception.

•Choosing Mono may improve reception of a poor quality FM station.

27Seek button

In Tuner mode, scans the selected band and automatically tunes in stations with strong sig- nals.

28Preset/Tune button

In Tuner mode, switches between manual and preset tuning.

29Sync button

Displays the Lip Sync Delay menu. If the pic- ture and soundtrack are out of sync, use /to delay the audio signal from 0-169mS.

•While the Lip Sync Delay menu is displayed, press the Sync button again to toggle lip sync delay on and off.

30Dynamic Range button

Adjusts the dynamic range; i.e., the difference between the loudest and quietest passages in an audio soundtrack.

•The default setting is 100% (maximum range).

31Bypass button

Toggles Tone Control on and off. When Tone Control is on, use the Bass and Treble buttons to manually adjust the tone.

32Dim button

Steps through three brightness level for the front panel display.

33Macro buttons (1~4)

Programmable buttons. Can be taught to store and execute up to ten button presses; see page 52.

Chapter 1 - Welcome

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GTP-870HD Owner’s Manual

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Adcom GTP-870HD Bass button, Treble button, Sleep button, Backlight button, Mute button, Volume  / buttons, Setup button
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GTP-870HD specifications

The Adcom GTP-870HD is a versatile home theater processor and amplifier, designed to deliver exceptional sound quality and a range of advanced features for audio and video enthusiasts.

At its core, the GTP-870HD supports high-definition audio and video formats, making it a centerpiece for modern home entertainment systems. With its capability to process various surround sound formats, including Dolby Digital, DTS, and advanced multichannel audio formats, it ensures a truly immersive listening experience. The processor is equipped to handle high-definition audio streams, allowing users to enjoy music with clarity and depth that exceeds standard listening experiences.

One of the standout features of the GTP-870HD is its ability to decode high-definition audio formats such as Dolby TrueHD and DTS-HD Master Audio. This is complemented by built-in advanced digital signal processing (DSP), enabling fine-tuning of audio settings to fit the unique acoustics of any room. This attention to detail ensures that every sound is reproduced accurately, whether it’s a subtle dialogue or the crescendo of a cinematic score.

In terms of connections, the GTP-870HD is equipped with an array of inputs and outputs. It includes multiple HDMI ports, allowing for seamless integration with high-definition sources like Blu-ray players, gaming consoles, and streaming devices. The HDMI interfaces support 4K and 3D video pass-through, ensuring compatibility with the latest video technologies. Additionally, the unit features analog inputs, allowing for traditional sources to be connected, making it a flexible choice for varied setups.

The GTP-870HD also boasts advanced user controls with an intuitive on-screen display, enabling easy navigation through settings and configurations. This user-friendly interface enhances the overall experience, making it accessible even for those who may not be as technologically inclined.

Furthermore, the inclusion of advanced room calibration technology optimizes audio playback based on room characteristics, ensuring that sound is balanced and immersive, regardless of the environment.

Overall, the Adcom GTP-870HD is designed for audiophiles and home theater enthusiasts who demand high-quality performance and advanced features. With its robust set of specifications and capabilities, it represents an excellent value for those looking to enhance their home entertainment systems. With the GTP-870HD, users can expect an enriched audio experience that truly brings movies, music, and games to life.
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