Merging Technologies AKDG8DS 8-channel Mic/Line Input Extension Card

We have started to ship the new AKDG8D AD input cards. These remotely controlled Mic/Line input cards are 3rd generation Dual Gain topology designs, taking inspiration from the outstanding Anubis Preamps, showing zero tolerance to any compromise on the audio quality.

These cards are a new benchmark in analog circuit design, and provide additionally a Line level post Mic-pre “Direct Out” output.
Available in models that work up to 192kHz (AKDG8D, Standard) and DXD/DSD256 (Premium).

Features

• 8 x exceptionally transparent, Swiss designed pre-amplifiers
• Remote/Local switch to Line Level on a per channel basis
• Completely accessible remotely for all parameter changes
• Phantom Power/Polarity Invert/Low Cut/Impedance switchable per channel
• Removes the need for DI boxes
• Allows build-in Mic splitting variants
• Dynamic range of 136dB (A-weighted, typ)
• Auto-mute circuitry for “no-pop” power cycling

For more info about Merging Technologies, visit: http://www.merging.com

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Mic Pre-Amp + ADC:

• Mic Pre Max Input (Mic+Pad / Mic / Boost): +24 dBu / +12 dBu / +0 dBu
• Mic Pre Max Input (Pad On; Pad Off): > 3 kΩ; 10.4 kΩ
• Input Impedance (Zlo; ZHi): > 3 kΩ; 10.4 kΩ
• Dynamic Range (flat 20 Hz-20 kHz): > 134 dB
• Dynamic Range (A-weighted, typ): 136 dB
• Gain Range (software controlled): 0 dB to +66 dB
• Gain Precision: ±0.2 dB
• Gain Step: 0.5 dB
• THD+N Pre + A/D (20 Hz-20 kHz) @ -2 dBFS: -110 dB (0.00031 %)/-112 dB (0.00025 %)
• Interchannel Crosstalk @ 1kHz, typ.: <-125dB
• Interchannel Crosstalk @ 20Hz - 20 kHz: < -100 dB
• EIN @ >40 dB Gain (150Ω Source Impedance, A-weighted, typ): -128 dBu
• Common Mode Rejection Rate @ 1kHz, typ.: 75 dB (up to -20 dBFS)
• Common Mode Rejection Rate @ 20Hz - 20 kHz: > 60 / 65 dB (up to -20 dBFS)
• Phantom Power (Software Switchable Per Channel): +48 Volts
• Phase Reverse Switch (Software Switchable Per Channel): Yes
• Low Cut Filter (Software Switchable Per Channel): -12 dB/octave, 80 Hz

Line Input:

• Frequency Response +0/-0.1dB @ fs = 44100 Hz: 5.7 Hz - 20.5 kHz
• Frequency Response +0/-1.0dB @ fs = 44100 Hz: 1.8 Hz - 21.0 kHz
• Frequency Response +0/-0.1dB @ fs = 96000 Hz: 5.7 Hz - 43.9 kHz
• Frequency Response +0/-1.0dB @ fs = 96000 Hz: 1.8 Hz - 45.4 kHz
• Frequency Response +0/-0.1dB @ fs = 192000 Hz: 5.7 Hz - 42.1 kHz
• Frequency Response +0/-1.0dB @ fs = 192000 Hz: 1.8 Hz - 64.7 kHz
• Frequency Response +0/-0.1dB @ fs = 384000 Hz: 5.7 Hz - 40 kHz
• Frequency Response +0/-1.0dB @ fs = 384000 Hz: 1.8 Hz - 75 kHz
• Max Line Input for 0 dBFS: +24 dBu
• Input Impedance: 10.4 kΩ
• Dynamic Range (flat 20 Hz-20 kHz), ref +24 dBu: > 136 dB
• Dynamic Range (A-weighted, typ), ref +24 dBu: 138.5 dB
• THD+N Line+A/D (1 kHz) @ -2 dBFS, Typ.: -106 dB (0.0005%)/-109 dB (0.00035%)
• THD+N Line+A/D (20 Hz-20 kHz) @ -2 dBFS: < -106 dB
• Interchannel Crosstalk @ 1kHz, typ.: -130 dB
• Interchannel Crosstalk @ 20Hz - 20 kHz: < -100 dB
• Sensitivity Range for 0 dBFS (software controlled): -42 dBu to +24 dBu
• Gain Precision: ±0.2 dB
• Gain Step: 0.5 dB
• Common Mode Rejection Rate @ 1kHz, typ.: 75 dB (up to -20 dBFS)
• Common Mode Rejection Rate @ 20Hz - 20 kHz: > 65 dB (up to -20 dBFS)
• Group Delay (1FS): 5/fs
• Group Delay (2FS): 5/fs
• Group Delay (4FS) / Premium (8FS): 6/fs / 7/fs