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Sony STR-DE685

A/V receiver with Dolby Digital, DTS, and Pro Logic II

Item # 158STRE685

Experience all the thrills that 5.1-channel digital home theater has to offer! Sony's STR-DE685 boasts...

Experience all the thrills that 5.1-channel digital home theater has to offer! Sony's STR-DE685 boasts...

Discontinued item

Item # 158STRE685

About the Sony STR-DE685

Experience all the thrills that 5.1-channel digital home theater has to offer! Sony's STR-DE685 boasts super-precise 32-bit processing to deliver gloriously three-dimensional sound from Dolby® Digital and DTS® soundtracks. You also get Dolby Pro Logic™ II, which lets you transform Dolby Surround and stereo sources into 5.1-channel sound, and Sony's exclusive Digital Cinema Sound DSP modes, which let you enhance any type of surround soundtrack with the ambience of your choice.

Experience all the thrills that 5.1-channel digital home theater has to offer! Sony's STR-DE685 boasts super-precise 32-bit processing to deliver gloriously three-dimensional sound from Dolby® Digital and DTS® soundtracks. You also get Dolby Pro Logic™ II, which lets you transform Dolby Surround and stereo sources into 5.1-channel sound, and Sony's exclusive Digital Cinema Sound DSP modes, which let you enhance any type of surround soundtrack with the ambience of your choice.

You get plenty of ins and outs to build a great system, including component video switching for 2 sources, 4 digital inputs, a 5.1-channel analog input for an SACD or DVD-Audio player, and more! 100 watts x 5 channels of clean Sony power ensures dynamic multichannel sound. Two sets of main speaker outputs let you hook up stereo speakers in a second room (but you can only play one set at a time). The multibrand remote gives you easy control of your entire A/V system.

Details:

  • 32-bit processing for surround decoding (Dolby Digital, DTS, Pro Logic II) and Digital Cinema Sound modes
  • 100 watts x 2 (stereo) into 8 ohms (20-20,000 Hz) at 0.09% THD — or 100 x 5 in surround mode
  • component video switching (2 in, 1 out)
  • digital inputs: 3 optical, 1 coaxial
  • digital outputs: 1 optical
  • 3 audio and 4 A/V (including 3 S-video, 1 front-panel, and one 5.1-channel) inputs
  • preamp-level subwoofer output
  • no phono input
  • multibrand remote
  • Sony A1II control
  • 30 AM/FM presets
  • 2 sets of main speaker outputs (but you can only play one at a time)
  • binding post terminals for all main-room speakers
  • 16-15/16"W x 6-1/4"H x 13-11/16"D
  • warranty: 2 years
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What's in the box:

  • AM/FM/Dolby Digital/DTS/Dolby Pro Logic II Receiver
  • RM-PP411 remote
  • 2 "AA" batteries
  • AM loop antenna
  • FM wire antenna
  • Instruction manual
  • Correction sheet
  • Warranty sheet
  • Safeguards sheet
  • Sheet on correct loudspeaker connections (taped to top of receiver).
MFR #STR-DE685

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Stacey B.

Features & specs

Amplification
Number Of Channels N/A
Stereo RMS Power (watts) ---
THD in Stereo ---
Frequency Bandwidth (stereo) ---
Minimum Impedance L/R 8 ohms
Minimum Impedance Center 8 ohms
Minimum Impedance Surround 8 ohms
General Features
Bluetooth No
Apple AirPlay ---
Alexa-compatible No
Google Assistant-compatible No
Chromecast built-in No
DTS Play-Fi No
App Remote Control No
On-Screen Display No
Auto Speaker Calibration ---
Multi-room Audio/Video
Powered Multi-room Audio Output No
Preamp Multi-room Audio Output No
Multi-room HDMI Output No
Total Number of Zones 1
Playback from Digital Audio Inputs No
Playback from Streaming Sources No
Surround Processing
Dolby Digital Yes
Dolby Atmos N/A
Dolby Atmos Height Virtualization ---
DTS Yes
DTS:X ---
DTS Virtual:X ---
Inputs & Outputs
Phono Input No
Audio-Video Inputs 4
Audio-only Inputs 3
Component Video Inputs 2
Component Video Monitor Outputs 1
Optical Digital Inputs 3
Coaxial Digital Inputs 1
Optical Digital Outputs 1
Coaxial Digital Outputs None
Number of HDMI Inputs ---
HDMI Monitor Outputs ---
Subwoofer Outputs 1
Discrete Subwoofer Outputs No
Multi-Channel Analog Input No
Multi-channel Preamp Output No
Main Speaker Output Pairs Posts
Main Speaker Terminals Posts
Ethernet Port ---
USB Connections None
Removable Power Cord ---
Supports Wireless Rear Speakers No
HDMI Features
HDMI Version ---
VRR (Variable Refresh Rate) No
ALLM (Auto Low Latency Mode) No
4K/120Hz-Capable Inputs No
Audio Return Channel No
Video Upscaling No
HDR (High Dynamic Range) Support
HDR10 No
HDR10+ No
HLG No
Dolby Vision No
Other Specs
FM Sensitivity 11.2 dBf
Multibrand Remote Control ---
Learning Remote No
Width (inches) 16.9375
Height (inches) 6.3
Depth (inches) 12.375
Weight (pounds) ---
Parts Warranty 2 Years
Labor Warranty 2 Years
The Sony STR-DE685 replaces these items:

Product Research

Features
Remote Control

Inputs and Outputs

Features

Surround Modes:

  • Normal Surround: Normal Surround includes the following modes:
    • Dolby Digital Surround
    • Dolby Pro Logic II: Pro Logic II is a new Dolby Laboratories technology that produces surround sound from any stereo source, including CDs, VHS tapes, TV shows, digital audio files like MP3 and AAC, cassette tapes, and FM radio broadcasts. Like Dolby Digital, Dolby Pro Logic II has stereo surround output, giving you a more realistic surround sound experience. Unlike Dolby Digital, Dolby Pro Logic II allows you to enjoy a "5.1-like" presentation using any analog stereo source. There are two Pro Logic II modes, which have been designed to ensure optimal playback of movie soundtracks and music-only sources; you may select Pro Logic II Movie or Pro Logic II Music to match the type of audio being decoded.
    • DTS
  • Digital Cinema Sound: This is a collaboration between Sony Electronics and Sony Pictures where the actual measurements of the sound acoustics in these studios are taken. This information is programmed into this receiver so as to simulate the actual theatre in your home environment. The three DCS fields that you can choose from are:
    • Cinema Studio Ex. A: reproduces the sound characteristics of Sony's "Cary Grant Theater" cinema production studio
    • Cinema Studio Ex. B: reproduces the sound characteristics of Sony's "Kim Novak Theater" cinema production studio
    • Cinema Studio Ex. C: reproduces the sound characteristics of Sony's scoring stage
  • Hall: reproduces the acoustics of a rectangular concert hall
  • Jazz Club: reproduces the acoustics of a jazz club
  • Concert (Live Concert): reproduces the acoustics of a 300-seat live concert
  • Game: obtains maximum audio impact from video game software

Note: With each soundfield, you have the ability to adjust the bass, treble, surround effect levels, balance, independent speaker levels, LFE Mix, and Dynamic Range Compression. When adjustments are made, they are automatically stored for that soundfield until you make further adjustments. To retrieve factory settings for the soundfield, just turn the receiver off, and then hold down the power buttin until "SF CLR" appears on the display.

Auto Format Decoding: Automatically detects the type of audio signal being input (Dolby Digital, DTS, Dolby Pro Logic, 2 channel) and performs the proper decoding without adding any effects.

96kHz Sampling Frequency Compatibility: The coaxial and Toslink digital input jack is compatible with digital signals having a sampling frequency of 96kHz.

Note: Both the coax and Toslink inputs are compatible with 96kHz, 48kHz, 44.1kHz, and 32kHz sampling frequencies

Set-up:

  • Front Speakers: you may select "LARGE" or "SMALL"
  • Center Speaker: you may select "NO", " LARGE" or " SMALL"
  • Surround Speaker: you may select "NO", " LARGE" or " SMALL"
  • Subwoofer: you may select "YES" or "NO"
  • Left and Right Distance: 3 to 40 feet (1 foot steps)
  • Center Distance: whatever the distance set for L and R down to 5 ft less (1 ft steps)
  • Surround Left and Right Distance: the distance set for L and R down to 15 ft less (1 ft steps)
  • Rear speaker place: when using rear speakers, this setting is used for proper operation of the sound fields that create virtual rear speakers; you may select "SIDE", "MID" or "BEHIND"
  • Rear speaker height: you may select the height as either "LOW" or "HIGH"
  • C. Mode: your choice of AV1 or AV2

Sound Field Customizing: Depending on the Mode selected, you can adjust the following parameters:

  • Effect Level: the "presence" of the surround effect may be adjusted, depending on the soundfield, up to 15 steps
  • Front Balance: the balance can be adjusted +/-8 steps
  • Center Level: the level may be adjusted in 1dB steps from -10dB to +6dB
  • Surround Left Level: the level may be adjusted in 1dB steps from -10dB to +10dB
  • Surround Right Level: the level may be adjusted in 1dB steps from -10dB to +10dB
  • Sub Woofer Level: the level may be adjusted in 1dB steps from -10dB to +6dB
  • LFE Mix: Lowers the level of the LFE channel output. You may select "OFF" (mute), or the level may be set from -20 to 0dB in 1dB steps. Note that this effects only the LFE channel, not the bass sent to the sub through bass redirection circuitry.
  • Dynamic Range Compressor: You can select OFF, 0.1-0.9, in 1 dB steps, STD, and MAX. Enables or disables dynamic compression for less variation in volume
  • Bass/Treble

Sleep Timer: The unit may be set to automatically turn off after 2 hours, 1 hour and 30 minutes, 1 hour, or 30 minutes.

Dimmer: There are 3 levels of display brightness, plus you may turn the display off (control from the front of the unit only).

Multi Channel Input: Although this unit features built-in Dolby Digital and DTS processing, it also has a 5.1 multi channel input for use with external multi-channel decoders, including potential future units such as multi-channel SACD players and DVD Audio players. 

Station and Source Naming: Each preset station and program source may be given an index name of up to 8 characters. For example, two VCRs can be displayed as 8MM and VHS.

Backup Memory: Once a sound field is customized, the changes are stored in memory indefinitely, unless the receiver is disconnected from power for about 2 weeks. If the receiver is disconnected from power for about 1 week, all of the tuner presets will be cleared from the receiver's memory.

Remote Control

Overview: The supplied remote will control Sony A/V equipment. The source buttons, transport keys, and master volume keys glow in the dark. This is a multibrand remote. 

Inputs and Outputs

Front panel:

  • Phones: standard headphone jack
  • Video 3 A/V input: RCA audio and composite video input

Rear panel:

  • DVD/LD A/V input: RCA audio, composite RCA video, S-Video and component video inputs
  • DVD/LD Coax digital input: coax RCA input that is compatible with Dolby Digital, DTS and PCM digital signals; this input is compatible with signals that have a 96kHz sampling frequency. This is not AC-3 RF. If you are using a LaserDisc with AC-3 RF output, a demodulator must be purchased separately and connected between the LD player and this unit!
  • Video 1 A/V input/output:  RCA audio, composite RCA video, and S-Video inputs and outputs
  • Video 2 A/V input: RCA audio, composite RCA video, S-Video and component video inputs
  • Video 2 Optical Digital input: Toslink optical digital input that is compatible with Dolby Digital, DTS and PCM digital signals; this input is compatible with signals that have a 96kHz sampling frequency.
  • Antenna inputs: FM Coax and AM spring clip antenna inputs
  • CD/SACD input: RCA stereo input
  • Aux input: RCA stereo input
  • MD/Tape input/output: RCA stereo input and output
  • MD/Tape Optical digital input/output: one Toslink optical digital input and one Toslink optical digital output
  • Monitor output: RCA composite video, S-Video and component video outputs
  • Multi Channel Input: this is a 5.1 multi channel input consisting of left front, right front, center, left rear, right rear and subwoofer RCA inputs for use with external multi channel decoders (for video use, it is used with any of the Video inputs on the unit)
  • Subwoofer preamp output: mono RCA preamp output for an optional powered subwoofer
  • Speaker Outputs : binding post outputs for front A, surround, and center speakers; spring clip outputs for front B speakers. Note: The front A and B speakers cannot be played simultaneously.
  • Control A1 II hook-up
  • Switched AC outlet

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