Metric Halo ULN-8

The ULN-8 from Metric Halo is an extremely high-quality digital audio interface with on-board DSP processing for Apple computers. It can be used to record audio in the field or in the studio, and it packs a lot of power for mixing and mastering in stereo and multiple surround sound formats, including 7.1. It offers the utmost in sound quality, while remaining ultra-portable, easy to use, and unwaveringly powerful.


The eight on-board microphone preamps are of unusually high-quality for a portable device of this kind. The ULN-8 ships the v.5 mixer, a software mixing engine with "character" options on every channel. The character options are models of analog circuits, vintage tubes, FETs, transformers, etc. You can use the ULN-8 in stand alone mode if you just want to utilize its premium preamplifers, or for format conversion.


If you need more I/O and DSP power, you can link up to 3 ULN-8's together. It can also link with Metric Halo's other hardware interfaces, the ULN-2 and 2882. The purchase of a ULN-8 includes a full license to +DSP, Metric Halo's dedicated signal processing software. The front panel of the ULN-8 offers comprehensive metering, with 16 meters and a total of 495 bi-color LEDs.


The extensive digital and analog I/O on the back panel is carried out with DB-25 connectors with Tascam/Digidesign pinouts. The ULN-8 is compatible with OSX 10.3.9 or newer, and plays well with both Intel and PPC processors. For power users who understand the benefits that can be reaped in a quality piece of equipment, the ULN-8 is a well-rounded solution that offers uncompromising audio quality in a travel friendly package.


Exceptional archival-grade converter quality

Boutique-quality mic preamps Flexible integrated analog monitor controller Universal sample rate support Analog, AES, and FireWire interfacing Rock solid stability with mature real-world-tested firmware, software, and drivers Instant access to tactile controls Fully digital control for total recall, remote control and control surface support Comprehensive precision metering so you always know what is going on Works with or without a computer Metric Halo's exclusive per-channel selectable character from ultra clean to nice and gooey Integrated ultra-low-latency processing with plenty of DSP power to run it Most compact, lowest weight, lowest power and lowest price in its class






Rails
Preamp Rails: +/- 15.8 Volts
Analog Rails (low power): +/- 9.9 Volts
Analog Rails (high power): +/- 12.6 Volts


Phantom Power
48 +/- 0.1 Volts
Max Phantom Current Per Mic: 10 ma


Maximum Level
Maximum I/O Levels (Balanced)

Peak Line Output @ 0 dBFS (no jumper/low power): +18.5 dBu
Peak Line Output @ 0 dBFS (output jumper/low power): +22.0 dBu
Peak Line Output @ 0 dBFS (output jumper/high power): +24.5 dBu
Analog Send Max Output: +21.5 dBu
Mic Pre Max Input: +20 dBu
Line In Max Input: +24.5 dBu
Output Impedance: 5 Ohms




Monitoring
Nominal FS output (Balanced) Output Jumper Off: -19.0 dBu
Nominal FS output (Balanced) Output Jumper On: -12.0 dBu
Maximum Output: Same as Line
Gain Range: -96 dB to +30 dB
Gain Precision: +/- 0.05 dB
Gain Step: 0.5 dB


Panel Microphone Preamp
Mic Pre Input + ADC

Input Impedance: 3.3 kOhm
Dynamic Range (-60 dB, flat 0-22.05 kHz, typ): 115 dB
Dynamic Range (-60 dB, A-weighted, typ): 118 dB
Noise Floor (flat 0-22.05 kHz, typ): 115 dB
Noise Floor (A-weighted, typ): 117.9 dB
Gain Range: -22 dB to +91.5 dB
Gain Precision: +/- 0.05 dB
Gain Step: 0.05 dB
THD D/A/A/D loop @ -12 dBFS: 0.0007 %
THD D/A/A/D loop @ -12 dBFS +12 dB Gain: 0.0015 %
THD D/A/A/D loop @ -0 dBFS: 0.0023 %
Crosstalk @ 1kHz: -110 dB
IMD 1k component (19 kHz/20kHz @ +8dBu): -104 dBu
EIN @ 60 dB Gain (150 Ohm Source Impedance): -130.50 dBu
EIN @ 60 dB Gain (0 Ohm Source Impedance): -133.25 dBu
Analog Send Calibration (ADC = 0 dBFS): +21.5 dBu
Phantom Power (Switchable Per Channel): +48 Volts


Mic Pre + ADC Frequency Response


+0/-0.1dB @ fs = 44100 Hz: 8.9 Hz - 20.5 kHz
+0/-1.0dB @ fs = 44100 Hz: 2.9 Hz - 21.0 kHz
+0/-0.1dB @ fs = 96000 Hz: 8.9 Hz - 43.9 kHz
+0/-1.0dB @ fs = 96000 Hz: 2.9 Hz - 45.4 kHz
+0/-0.1dB @ fs = 192000 Hz: 8.9 Hz - 42.1 kHz
+0/-1.0dB @ fs = 192000 Hz: 2.9 Hz - 64.7 kHz
5 degree low-end in-channel phase deviation point: 20.0 Hz
Interchannel phase 0 Hz - 20 kHz: < +/- 0.05 degrees
Crosstalk from SMPTE Input: < -142 dB




Lining
Line Input + ADC

Input Impedance: 10 kOhm
Dynamic Range (-60 dB, flat 0-22.05 kHz, typ): 115 dB
Dynamic Range (-60 dB, A-weighted, typ): 118 dB
Noise Floor (flat 0-22.05 kHz, typ): 115 dB
Noise Floor (A-weighted, typ): 117.9 dB
THD D/A/A/D loop @ -12 dBFS: 0.0005 %
THD D/A/A/D loop @ -0 dBFS: 0.0015 %
Crosstalk @ 1 kHz: -127 dB
IMD 1k component (19 kHz/20kHz @ +8dBu): -104 dBu
Gain Range: -12 dB to +31.5 dB
Gain Precision: +/- 0.05 dB
Gain Step: 0.5 dB


Line Input + ADC Frequency Response


+0/-0.1dB @ fs = 44100 Hz: 5.7 Hz - 20.5 kHz
+0/-1.0dB @ fs = 44100 Hz: 1.8 Hz - 21.0 kHz
+0/-0.1dB @ fs = 96000 Hz: 5.7 Hz - 43.9 kHz
+0/-1.0dB @ fs = 96000 Hz: 1.8 Hz - 45.4 kHz
+0/-0.1dB @ fs = 192000 Hz: 5.7 Hz - 42.1 kHz
+0/-1.0dB @ fs = 192000 Hz: 1.8 Hz - 64.7 kHz
5 degree low-end in-channel phase deviation point: 10.7 Hz
Interchannel phase 0 Hz - 20 kHz: < +/- 0.05 degrees
Crosstalk from SMPTE Input: < -142.dB




Audio Processing
Input Processing:

M/S Decode
Parametric EQ
Dynamics
Limiting
Character
Transient Control
Reverb
Delay
Nearly Infinite Combinations via +DSP


Output Processing:


M/S Decode
Parametric EQ
Dynamics
Limiting
Character
Transient Control
Reverb
Dither
Mix Foldown
Signal Generation
Nearly Infinite Combinations via +DSP







Rear Panel
MIDI Connectors (In and Out): 5-Pin DIN
SMPTE Connectors (In and Out): Balanced TRS
Word Clock Connectors (In and Out): 75 Ohm BNC
AES Connector (8 Channels In and Out): DB-25
AES Connector Pinout: Tascam/Digidesign Digital
Mic Input Connector (8 Channels): DB-25
Mic Input Connector Pinout: Tascam/Digidesign Analog
Line Input Connector (8 Channels): DB-25
Line Input Connector Pinout: Tascam/Digidesign Analog
Send Output Connector (8 Channels): DB-25
Send Output Connector Pinout: Tascam/Digidesign Analog
Line/Monitor Output Connector (8 Channels): DB-25
Line/Monitor Output Pinout: Tascam/Digidesign Analog
Line/Monitor Mult Output Connectors (Analog 1/2): TRS Balanced
FireWire Connectors (2): 1394a 6-Pin
Power (Unswitched): 2.1mm Coaxial
Power (Switched): 4-Pin XLR
Security Slot: Kensington


Power
Voltage: 14v - 28v
Power: 32 Watts
FireWire Bus Powerable: No
Passes FireWire Bus Power: Yes
Supplies FireWire Bus Power: No
External Supply (Input): 100-240 VAC
External Supply (Max Input Current): 1.2 A
External Supply (Output): 24 VDC
External Supply (Max Output Current): 2.0 A
External Supply Connector: 4-Pin XLR


Dimensions
17 x 13 x 1.72" (432 x 330 x 44 mm)


Weight
6 lbs (2.7 kg)










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