-SD/SDHC/SDXC cards used as recording/playback media -6 balanced mic/line inputs (1-4: XLR/TRS combo jacks, 5-6: TRS jacks) -6 unbalanced outputs (RCA pin jacks) -COAXIAL digital input and output (S/PDIF, AES/EBU) -Recording/playback formats: BWF, WAV, MP3 -With BWF format, recording starting times can be stored in files -8-track recording at 96kHz/24-bit (BWF, WAV) -6 mic/line inputs and stereo mix recording or 6 mic/line input and digita . . .

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-SD/SDHC/SDXC cards used as recording/playback media
-6 balanced mic/line inputs (1-4: XLR/TRS combo jacks, 5-6: TRS jacks)
-6 unbalanced outputs (RCA pin jacks)
-COAXIAL digital input and output (S/PDIF, AES/EBU)
-Recording/playback formats: BWF, WAV, MP3
-With BWF format, recording starting times can be stored in files
-8-track recording at 96kHz/24-bit (BWF, WAV)
-6 mic/line inputs and stereo mix recording or 6 mic/line input and digital stereo recording
-Record MP3 files at 96, 128, 192 and 320 kbps
-Record 4-channel MP3 files
-From 4 mic/line inputs (XLR/TRS combo jacks) or 2 mic/line inputs and digital stereo inputs
-2-track recording at 24-bit/192kHz (BWF, WAV)
-From 2 mic/line inputs or digital stereo inputs
-Digital inputs and outputs support double speed 96 kHz and quad speed 192 kHz
-Sampling frequencies
-44.1, 48, 96, 192 kHz (BWF, WAV) 44.1, 48 kHz (MP3)
-Quantization bit depth: 16/24-bit (BWF, WAV)
-6 channels of TASCAM HDDA mic preamps for high audio quality with 48V phantom power
-Limiter and low-cut filter available on each mic/line input
-Built-in stereo monitoring mixer for headphone mix and/or recording
-Dual-recording function allows two files to be recorded simultaneously at different levels
-GANG function allows the input gain of multiple channels to be operated simultaneously
-Pre-recording function allows the capture of audio two seconds before recording is started
-Automatic-recording function can start and stop recording automatically in response to the input signal level (−48, −24, −12 or −6 dB)
-Even when multiple tracks are used, all recordings made at the same time can be managed as a single take/file
-Track incrementation allows a recording to be split by creating a new file at the desired point without interrupting recording
-Up to 1000 takes and 5000 files can be recorded on a single card
-Mark function can be used to move to specific points (up to 99 marks per take)

http://www.tascam.com/content/downloads/products/873/e_dr-680mk2_om_va.pdf

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