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Specifications

The Horus has quickly become known as one of the most transparent and sonically impressive ADDA interfaces in the world today. Have a look below at some of the measurements of the system and its signal path to start to find out why this is.

Hapi MkII Base Unit

Specifications
Case Material Powder Coated Steel
Front Panel Material Brushed Aluminum
Weight (excluding redundant PS) 4.5 kg / 10 lbs
Dimensions (1U rack mounting) 483 x 320 x 44 mm
Voltage (AC) 90V–260V, 47–63 Hz
Voltage (DC) (optional) 10-14V
Power Consumption (Max) < 30 Watts
Front Panel TFT size/resolution OLED (160x128 px)
Headphone Monitor Jacks
Headphone Jacks 6.35mm (¼”) & 3.5mm TRS Female Stereo
Dynamic Range (A-weighted, typ.) High / Low > 118 dB
Max output Level High / Low 15.5 dBu / 7.3 dBu (load 600/16 Ω)
Max output Power 2 x 200 mW (load 16 Ω)
Frequency response +0/-0.2dB @ fs = 48 kHz 6 Hz – 22 kHz
Frequency response +0/-3dB @ fs = 96 kHz 2 Hz – 44.2 kHz
Frequency response +0/-3dB @ fs = 192 kHz 2 Hz – 88.1 kHz
Output Impedance 20Ω
THD+N 1 kHz @ 0 dBFS High / Low < -106 dB (0.0005%)
Attenuation Range (Software controlled) - ∞ dB to 12 dB
Gain Step / Precision 0.5 dB / ±0.05 dB
DXD Support Native
DSD Support DSD 64 to DSD 256
Sync Connectors
"Sync" Cable (LTC/Video Ref/MIDI) D-Sub 15Pin
LTC In & Out (via “Sync” Cable) Balanced XLR
Video Reference In (via “Sync” Cable) BNC
MTC (I/O via “Sync” Cable) 5-Pin DIN
Word Clock Input (Switchable 75 Ω Termination) BNC, 0.5Vp-p min
Word Clock Output (Zout = 35 Ω) BNC, 5Vp-p
Maximum supported deviation +/-1000ppm
RAVENNA module
RAVENNA Primary / Secondary (GbE) RJ45
AES-EBU module
AES Connector pinout (DB-25 female) DB25 / AES59 (Tascam Dig.)
AES I/O Grounded and transformer coupled
Input & Output Impedance 110 Ω
MADI module
MADI types (Coaxial / Optical) BNC / SC
Input & Output Impedance 110 Ω
ADAT module
ADAT/SPDIF Optical Toslink

Horus Base Unit

Specifications
Case Material Powder Coated Steel
Front Panel Material Brushed Aluminum
Weight (excluding redundant PS) 6.5 kg/ 14.4 lbs
Dimensions (2U rack mounting) 483 x 320 x 89 mm
Voltage (AC) 90V–260V, 47–63 Hz
Power Consumption (Max) < 120 Watts
Front Panel TFT size/resolution 4.3” / 480 x 272 pixels
Headphone Monitor Jacks
Headphone Jack 1&2 6.3 mm (1/4″) / 3.5 mm
Max output Level (Unbalanced) Load = 300 Ohms +15 dBu
Output Impedance 75 Ω
Dynamic Range (A-weighted, typ) 109 dB
THD+N (1 kHz) @ -2 dBFS < -100 dB (0.001 %)
Gain Range (software controlled) -60 dB to +12 dB
Gain Step/Precision 1dB / ±0.05 dB
Sync Connectors
“Sync” Cable (LTC/Video Ref) D-Sub 15Pin
LTC In & Out (via “Sync” Cable) Balanced XLR
Video Reference In (via “Sync” Cable) BNC
Word Clock Input (Switchable 75 Ω Termination) BNC, 0.5Vp-p min
Word Clock Output (Zout = 35 Ω) BNC, 5Vp-p
Maximum supported deviation +/-1000ppm
RAVENNA module
RAVENNA Primary / Secondary (GbE) RJ45
AES-EBU module
AES Connector pinout (DB-25 female) DB25 / AES59 (Tascam Dig.)
AES I/O Grounded and transformer coupled
Input & Output Impedance 110 Ω
MADI module
MADI types (Coaxial / Optical) BNC / SC
Input & Output Impedance 110 Ω

AKDG8DS / AKDG8DP Option Card

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
AKD8D/AKD8DP Direct Out
Max Direct Output level typ. +24 dBu / +12 dBu / +0 dBu
Output Impedance (Differential) < 100 Ω
THD+N (1 kHz) @ +10dBu < -111dB (0.00028 %)
Input Connector Pinout DB-25 / AES59 (Tascam Ana.)
Direct Output Connector Pinout DB-25 / AES59 (Tascam Ana.)

AKD8D / AKD8DP Option Card

(Legacy, see AKDG8D and AKD8GDP for latest versions)
Mic Pre-Amp + ADC
Mic Pre Max Input (Pad On / Pad Off) +24 dBu / +13 dBu
Input Impedance (Differential, Software Switchable Per Channel) 1.9 kΩ / 10 kΩ
Input Impedance with +48V ON (Diff., Soft. Switchable Per Channel) 1.9 kΩ / 10 kΩ
Dynamic Range (A-weighted, typ.) , ref +10 dBu 123.5 dB
Gain Range (software controlled) 0 dB to +66 dB
Gain Step/Precision 0.5 dB / ±0.2 dB
THD+N Pre + A/D (20 Hz-20 kHz) @ -2 dBFS (Standard/Premium) < -110dB (0.00031%)/-111dB (0.00028%)
Interchannel Crosstalk @ 1kHz, typ. < -125 dB
EIN @ >40 dB Gain (150O Source Impedance, A-weighted, typ.) < -128 dBu
Common Mode Rejection Rate (20 Hz – 20 kHz) > 60 dB (up to 0 dBFS)
Phantom Power (Software Switchable Per Channel) +48V
Phase Reverse (Software Switchable Per Channel) YES
Low Cut filter (Software Switchable Per Channel) -12 dB/octave, 80 Hz
Line Input
Max Line Input for 0 dBFS +24 dBu
Input Impedance (Differential) 10 kΩ
Dynamic Range (A-weighted, typ), ref +24 dBu 124 dB
THD+N Line+A/D (20 Hz - 20 kHz) @ -10 dBFS < -110dB (0.00031%)/-111dB (0.00028%)
Interchannel Crosstalk @ 1kHz @ fullscale < -130 dB
Sensitivity Range for 0 dBFS (software controlled) -42 dBu to +24 dBu
Gain Step/Precision 0.5 dB / ±0.2 dB
Common Mode Rejection Rate (20 Hz – 20 kHz) > 60 dB / > 65dB (both up to 0 dBFS)
Connector Pinout DB-25 / AES59 (Tascam Ana.)
AKD8D/AKD8DP Mic-Pre Analog Section
Frequency response +0/-0.5 dB, Line 2 Hz - > 200 kHz
Frequency response +0/-2.0 dB, Line 1 Hz - > 200 kHz
Frequency response +0/-0.5 dB, Mic, at G=40dB 2 Hz - 65 kHz
Frequency response +0/-2.0 dB, Mic, at G=40dB 1 Hz - 160 kHz
THD+N (1 kHz), Line/Mic at G=0dB < -115 dB (0.00018 %)
THD+N (20 Hz-20 kHz) , Line/Mic at G=0dB < -112 dB (0.00025 %)
Interchannel Crosstalk @ 1kHz, typ. -140dB
5° low-end in-channel Ø deviation pt: Line 9 Hz
5° low-end in-channel Ø deviation pt: Mic 9 Hz
Interchannel phase 10 Hz - 100 kHz < ±0.1°
AKD8D/AKD8DP Analogue Direct Output Section
Frequency response +0/-0.5dB @ Gain 40 dB 2 Hz – 65kHz
Max Direct Output Level, typ +24 dBu / +13 dBu
Direct Output Impedance (Differential) > 100 Ω
Dynamic Range (flat 20 Hz-20 kHz, typ.) 140 dB
THD+N (1 kHz) @ +10dBu < -120dB (0.0001 %)
Direct Output Connector Pinout DB-25 / AES59 (Tascam Ana.)

AD8D / AD8DP Option Card

(Legacy, see AKDG8DS and AKDG8DP for latest versions)
Mic Pre-Amp + ADC
Mic Pre Max Input (Pad On / Pad Off) +24 dBu / +13 dBu
Input Impedance (Differential, Software Switchable Per Channel) 2 kΩ / 13.6 kΩ
Input Impedance with +48V ON (Diff., Soft. Switchable Per Channel) 1.7 kΩ / 6.8 kΩ
Dynamic Range (A-weighted, typ.) , ref +13 dBu 120.5 dB
Gain Range (software controlled) 0 dB to +66 dB
Gain Step/Precision 0.5 dB / ±0.2 dB
THD+N Pre + A/D (20 Hz-20 kHz) @ -2 dBFS (Standard/Premium) < -96dB (0.0016 %) / -100 dB (0.001 %)
Interchannel Crosstalk @ 1kHz, typ. <-125 dB
EIN @ >40 dB Gain (150Ω Source Impedance, A-weighted, typ) < -128 dBu
Common Mode Rejection Rate @ 1kHz, typ. > 60 dB (up to 0 dBFS)
Phantom Power (Software Switchable Per Channel) +48V
Phase Reverse (Software Switchable Per Channel) YES
Low Cut filter (Software Switchable Per Channel) -12 dB/octave, 80 Hz
Line Input
Max Line Input for 0 dBFS +24 dBu
Input Impedance (Differential) 13.6 kΩ
Dynamic Range (A-weighted, typ), ref +24 dBu 121 dB
THD+N Line+A/D (20 Hz-20 kHz) @ -12 dBFS, typ. < -100 dB (0.001%)
Interchannel Crosstalk @ 1kHz, typ. < -120 dB
Sensitivity Range for 0 dBFS (software controlled) -42 dBu to +24 dBu
Gain Step/Precision 0.5 dB / ±0.2 dB
Common Mode Rejection Rate (20 Hz – 20 kHz) > 60 dB (up to 0 dBFS)
Input Connector Pinout (DB-25 female) DB-25 / AES59 (Tascam Ana.)
AD8D/AD8DP Mic-Pre Analog Section
Frequency response +0/-0.5 dB, Line 5 Hz - 75 kHz
Frequency response +0/-2.0 dB, Line 2.5 Hz - 150 kHz
Frequency response +0/-0.5 dB, Mic 10 Hz - 100 kHz
Frequency response +0/-2.0 dB, Mic 5 Hz - 200 kHz
THD+N (1 kHz), Line/Mic at G=0dB <-115 dB (0.00018 %)
THD+N (20 Hz-20 kHz) , Line/Mic at G=0dB <-112 dB (0.00025 %)
Interchannel Crosstalk @ 1kHz, typ. -135dB
5° low-end in-channel Ø deviation pt: Line 13 Hz
5° low-end in-channel Ø deviation pt: Mic 35 Hz
Interchannel phase 10 Hz - 100 kHz < ±0.1°
AD8D/AD8DP Analogue Direct Output Section
Frequency response +0/-0.3dB @ Gain 40 dB 10 Hz - 50 kHz
Max Direct Output Level, typ +24 dBu / +13 dBu
Direct Output Impedance (Differential) > 100 Ω
Dynamic Range (A-weighted, typ) 133 dB
THD+N (1 kHz) @ +10dBu < -120dB (0.0001 %)
Direct Output Connector Pinout DB-25 / AES59 (Tascam Ana.)

ADA8S/ADA8P Option Card

Mic Pre-Amp + ADC Section
Mic Pre Max Input (Mic+Pad / Mic / Mic Boost) +24 dBu / +12 dBu / +0 dBu
Input Impedance (Differential, Software Switchable Per Channel) 3 kΩ / 10.4 kΩ
Frequency response +0/-0.3dB @ fs = 48 kHz 9 Hz – 22 kHz
Frequency response +0/-0.3dB @ fs = 96 kHz 9 Hz – 46 kHz
Frequency response +0/-0.3dB @ fs = 192 kHz 11 Hz – 94 kHz
Dynamic Range (A-weighted, typ.), ref +12 dBu 137 dB
Dynamic Range Mic Boost (A-weighted, typ.), ref 0 dBu 128 dB
Gain Range (software controlled) 0 dB to +66 dB
THD+N Pre + A/D (20 Hz - 20 kHz) @ -2 dBFS < -111 dB (0.00028 %)
Interchannel Crosstalk @ 1kHz < -130 dB
EIN @ > 40 dB Gain (150Ω Source Impedance, A-weighted) < -127 dBu
Common Mode Rejection Rate (20 Hz – 20 kHz) > 75 dB
Phantom Power (Software Switchable Per Channel) +48V
Polarity Invert (Software Switchable Per Channel) YES
Low Cut filter (Software Switchable Per Channel) -12 dB/octave, 80 Hz
Line Input
Max Line Input for 0 dBFS +24 dBu
Input Impedance (Differential) 10.4 kΩ
Dynamic Range (A-weighted, typ), ref +24 dBu 139 dB
THD+N Line+A/D (20 Hz - 20 kHz) @ -2 dBFS < -111 dB (0.00028 %)
Interchannel Crosstalk @ 1kHz, typ. < -135 dB
Sensitivity Range for 0 dBFS (software controlled) -42 dBu to +24 dBu
Gain Step 0.5 dB
Common Mode Rejection Rate (20 Hz – 20 kHz) > 70 dB
Connector Pinout DB-25 / AES59 (Tascam Ana.)
Line Output Section
Max Output level software switchable for 0 dBFS +24 dBu / +18 dBu +0/-0.5 dB
Frequency response +0/-0.3dB @ fs = 48 kHz 0 Hz – 22 kHz
Frequency response +0/-3dB @ fs = 96 kHz 0 Hz – 46 kHz
Frequency response +0/-3dB @ fs = 192 kHz 0 Hz – 92 kHz
Output Impedance (Differential) < 80 Ω
Dynamic Range (A-weighted, typ.) 125 dB / 126 dB
THD+N (1 kHz) @ 0dBFS < -115 dB (0.00017 %)
Interchannel Crosstalk @ 1kHz < -139 dB
Connector Pinout DB-25 / AES59 (Tascam Ana.)
Latencies
Input latency at 44.1/48kHz 8 samples
Input latency at 88.2/96kHz 8 samples
Input latency at 176.4/192kHz 8 samples
Input latency at DXD/384kHz 10 samples
Output latency at 44.1/48kHz 9* samples
Output latency at 88.2/96kHz 9* samples
Output latency at 176.4/192kHz 9* samples
Output latency at DXD/384kHz 9* samples
 
* Filter setting
- Slow Roll Off Filter option = 9 Samples
- Sharp Roll Off Filter option = 38 Samples

ADA8 Option Card

(Legacy, see ADA8S and ADA8P for latest versions)
Mic Pre-Amp + ADC Section
Mic Pre Max Input (Pad On / Pad Off) +24 dBu / +13 dBu
Input Impedance (Differential, Software Switchable Per Channel) 2 kΩ / 6.8 kΩ
Frequency response +0/-0.3dB @ fs = 48 kHz 10 Hz – 22 kHz
Frequency response +0/-0.3dB @ fs = 96 kHz 10 Hz – 44 kHz
Frequency response +0/-0.3dB @ fs = 192 kHz 10 Hz – 85 kHz
Dynamic Range (A-weighted, typ.), ref +13 dBu 119.5 dB
Gain Range (software controlled) 0 dB to +66 dB
Gain Step/Precision 0.5 dB / ±0.2 dB
THD+N Pre + A/D (20 Hz - 20 kHz) @ -2 dBFS < -102 dB (0.0008 %)
Interchannel Crosstalk @ 1kHz < -125 dB
EIN @ >40 dB Gain (150Ω Source Impedance, A-weighted) < -128 dBu
Common Mode Rejection Rate (20 Hz – 20 kHz) > 60 dB (up to 0 dBFS)
Phantom Power (Software Switchable Per Channel) +48V
Phase Reverse (Software Switchable Per Channel) YES
Low Cut filter (Software Switchable Per Channel) -12 dB/octave, 80 Hz
Line Input
Max Line Input for 0 dBFS +24 dBu
Input Impedance (Differential) 13.6 kΩ
Dynamic Range (A-weighted, typ), ref +24 dBu 120 dB
THD+N Line+A/D (20 Hz - 20 kHz) @ -2 dBFS < -102 dB (0.0008%)
Interchannel Crosstalk @ 1kHz, typ. -125 dB
Sensitivity Range for 0 dBFS (software controlled) -42 dBu to +24 dBu
Gain Step/Precision 0.5 dB / ±0.2 dB
Common Mode Rejection Rate (20 Hz – 20 kHz) > 60 dB (up to 0 dBFS)
Connector Pinout (DB-25 female) DB-25 / AES59 (Tascam Ana.)
Line Output Section
Max Output level software switchable for 0 dBFS +24 dBu / +18 dBu +0/-0.5 dB
Frequency response +0/-0.3dB @ fs = 48 kHz 6 Hz – 22 kHz
Frequency response +0/-3dB @ fs = 96 kHz 6 Hz – 44 kHz
Frequency response +0/-3dB @ fs = 192 kHz 6 Hz – 88 kHz
Output Impedance (Differential) < 100 Ω
Dynamic Range (A-weighted, typ.) 123 dB
THD+N (1 kHz) @ 0dBFS < -108 dB (0.0004 %)
Interchannel Crosstalk @ 1kHz < -135 dB
Connector Pinout DB-25 / AES59 (Tascam Ana.)
Latencies
Input latency at 44.1/48kHz 16 samples
Input latency at 88.2/96kHz 16 samples
Input latency at 176.4/192kHz 13 samples
Output latency at 44.1/48kHz 9* samples
Output latency at 88.2/96kHz 9* samples
Output latency at 176.4/192kHz 9* samples
 
* Filter setting
- Slow Roll Off Filter option = 9 Samples
- Sharp Roll Off Filter option = 38 Samples

DA8/DA8P Option Card

Specifications
Max Line Output @ 0 dBFS (settings on +24 dBu) +25 dBu +0/-0.5 dB
Max Line Output @ 0 dBFS (settings on +18 dBu) +19 dBu +0/-0.5 dB
Frequency response +0/-0.3dB @ fs = 48KHz 0 Hz – 20 kHz
Frequency response +0/-0.3dB @ fs = 2.8224 MHz (DSD) 0 Hz – 20 kHz
Frequency response +0/-3.0dB @ fs = 2.8224 MHz (DSD) 0 Hz – 50 kHz
Line Output Impedance (Differential) 90 Ω
Dynamic Range (flat 20 Hz-20 kHz) (IOM-H-DA8) 122 dB
Dynamic Range (flat 20 Hz-20 kHz) (IOM-H-DA8P) 124.5 dB
Dynamic Range (A-weighted, typ) 127 dB
THD+N D/A (1 kHz) @ 0 dBFS (IOM-H-DA8) < -113dB (0.00022 %)
THD+N D/A (1 kHz) @ 0 dBFS (IOM-H-DA8P) < -116dB (0.00016 %)
Interchannel Crosstalk @ 1kHz, typ. -140 dB
Interchannel Crosstalk @ 20Hz - 20 KHz < -115 dB
Output latency (Slow Roll Off) 9 samples
Output latency (Sharp Roll Off) 35 samples
Gain Step 0.5 dB
Connector Pinout (DB-25 female) AES59/Tascam Analog