Specifications
All of Focusrite's FireWire interfaces are fully compatible
with Thunderbolt using a simple FireWire to Thunderbolt
adapter. Focusrite fully supports the use of Thunderbolt
with our FireWire interfaces. More information.
We always quote 'real world' performance figures (measured
to the AES17 standard). Some companies choose to quote
chipset performance, which is misleading, and here's why.
Microphone Inputs
Dynamic Range (A-Weighted): 109dB
SNR (A-weighted): -109dB
Frequency Response: 20Hz - 20kHz +/- 0.1 dB
THD+N: 0.001% (measured at 1kHz with a 20Hz/22kHz bandpass
filter)
Noise: EIN > 125dB (128dB analogue to digital) (measured at
60dB of gain with 150 Ohm termination (20Hz/22kHz bandpass
filter)
Maximum level (A-weighted): 8dBu at 1%
Line Inputs
Dynamic Range (A-Weighted): 109dB
SNR (A-weighted): -109dB
Frequency Response: 20Hz - 20kHz +/- 0.1dB
THD+N: < 0.001% (measured with 0dBFS input and 22Hz/22kHz
bandpass filter)
Noise: -90dBu (22Hz/22kHz bandpass filter)
Maximum level (A-weighted): 28.5dBu at 1%
Instrument Inputs
Frequency Response 20Hz-20KHz +/- 0.1dB
Maximum Input Level min gain no pad +8dBu
Maximum Input Level max gain no pad -42dBu
THD+N, -1dBFS, min gain, no pad < 0.0015%
SNR 109dB "A"
DNR 109dB "A"
Input Impedance > 1MOhm
X-talk < -100dB
Adjustable Gain > 50dB
Pad Attenuation 10dB
Headphone Outputs
Frequency Response 20Hz-20KHz +/- 0.1dB
SNR 109dB "A"
DNR 109dB "A"
Maximum Output into 32R +12.4dBu (+10.2dBV)
Power into 32R 250mW
Output Impedance < 7Ohms
Load Impedance > 24Ohms
Line level Outputs
Dynamic Range (A-Weighted): 108dB
SNR (A-weighted): -108dB
THD+N: < 0.001% (measured with 0dBFS input and 22Hz/22kHz
bandpass filter)
Maximum level (A-weighted): 15.7dBu at 0.883%
Additional Conversion Performance
Clock jitter < 250 picoseconds
THD+N AMPL (A-weighted)= -109dBFS
CONNECTIVITY
Analogue Channel Inputs (Inputs 1-8)
2 Mic/Line/Inst Combo XLR (Inputs 1 and 2)
6 Mic/Line Combo XLR (Inputs 3-8)
Automatic switching of Mic / Line (e.g. inserting a jack
switches from Mic to either Line or Instrument)
Digital Channel Inputs (Inputs 9-18) 44.1-96kHz
Stereo S/PDIF input on RCA
8 ADAT inputs on Optical Connector, reduces to 4 inputs at
88.2/96kHz • Optical input can be switched to S/PDIF 3/4 in
software preferences (ADATs disabled)
Analogue Audio Outputs (Outputs 1-10)
8 ¼” TRS Jack (Outputs 3-10)
2 monitor mix outputs on ¼” TRS Jack (Outputs 1 and 2)
Stereo headphones mix 1 on ¼” TRS (also routed to outputs 7
& 8)
Stereo Headphones mix 2 on ¼” TRS (also routed to outputs 9
& 10)
Digital Channel Outputs (Outputs 11-20) 44.1-96kHz
Stereo S/PDIF output on RCA
8 ADAT outputs on Optical Connector, reduces to 4 outputs at
88.2/96kHz
Optical output can be switched to S/PDIF 3/4 in software
preferences (ADATs disabled)
Other I/O
2 6-pin FireWire sockets
2 Standard 5-pin DIN MIDI connectors: In and Out
IEC mains power input connector
Weight and Dims
3kg / 6.6Ibs
482mm / 19" (W) x 45mm / 1.8" (H) x 265mm /10.4" (D)
Links
http://d3se566zfvnmhf.cloudfront.net/sites/default/files/focusrite/downloads/7046/userguidepro40english04.pdf
http://global.focusrite.com/firewire-audio-interfaces/saffire-pro-40
