With every project, you need to capture that perfect vocal and make the sound your own. VoiceMaster Pro represents a new generation of voice recording equipment.
Many of the elements from the award-winning VoiceMaster have been innovated upon. In addition, the unit features a whole host of new processors designed to ensure you have all you require to make the most of the artist you're recording. The award-winning Class A preamp captures every nuance from any source, whilst latency-free monitoring ensures direct and delay-free mix control. Tools such as the voice-optimized EQ, Vintage Harmonics and Tube Sound allow you to get creative with a touch of class, putting your own stamp on every recording. Add the optional 24-bit, 96 kHz digital output board to make the VoiceMaster Pro the perfect interface between your microphone and your DAW or other recording media, placing the ultimate tracking solution firmly within your grasp. Summary of the Differences Between VoiceMaster Pro and the Original VoiceMaster
VoiceMaster Pro has...
Latency-free monitoring section -- a separate stereo monitoring circuit that allows the user to monitor vocal + FX loop (e.g. to add reverb) + mix played back from e.g. DAW and control levels of these three sources, removing latency. (VoiceMaster has no monitoring section.)
24/96 digital output option, using the same A/D card as Penta and Trak Master. (VoiceMaster has no digital connectivity.)
Backlit VU output meter (VoiceMaster has no VU meter)
Instrument input in addition to line and mic inputs.
Insert send and return, between mic pre and expander. (VoiceMaster has no insert.)
Vintage Harmonics section. (VoiceMaster has only tape saturation simulator.)
Routing flexibility -- Vintage Harmonics and Compressor order can be reversed, and compressor and EQ order can also be reversed, hence 4 combinations of these 3 sections possible. (VoiceMaster has fixed processing block order.)
2U chassis. (VoiceMaster is 1U.)
6-LED input meter. (VoiceMaster has only single LED.)
6-LED expander meter. (VoiceMaster has only 4-LED meter.)
New lower noise opto compressor.
New lower noise opto expander.
New Tube Sound section. (VoiceMaster has none.) VoiceMaster Pro circuit also includes new tone control feature and sexy, 3-colour large LED.
More flexible EQ - now has frequency shift for HF (10k or 14k) and depth of notch filter ("absence") can now be varied. (VoiceMaster has no HF shift and fixed depth of notch.)
New de-esser- now features the ISA 430 de-esser - includes the 'listen' function, so that the sidechain of the de-esser can be isolated, making setting up the frequency to de-ess very easy.
6-LED De-esser meter. (VoiceMaster has only single LED.)
L+R Monitor inputs and outputs. (VoiceMaster has none.)
FX mono send and stereo return. (VoiveMaster has none.)

Technical Description
Mic Input Response
Gain range = 0 dB to 60 dB continuously variable.
Input Impedance = 1K4 W from 10 Hz to 200 kHz.
EIN = 128 dB measured at 60 dB of gain with 150 W terminating impedance and 20 Hz/22 kHz bandpass filter.
THD at minimum gain (0 dB) = 0.0004% measured with +16 dBu input signal and with a 20 Hz/22 kHz bandpass filter.
THD at maximum gain (60 dB) = 0.003% measured with a š36 dBu input signal and with a 20 Hz/22 kHz bandpass filter.
THD at maximum input level (26.5 dBu) = 0.005% measured with a 20 Hz/22 kHz bandpass filter.
Frequency response at minimum gain (0 dB) = flat at 10 Hz and š2 dB down at 200 kHz.
Frequency response at maximum gain (60 dB) = š2 dB down at 10 Hz and 200 kHz.
CMRR at full gain (60 dB) = 80 dB.
Line Input Response
Gain range = -10 dB to +10 dB continuously variable.
Input Impedance = 10K W from 10 Hz to 200 kHz.
Noise at main output with gain and fader set to unity (0 dB) = -94 dBu measured with a 20 Hz/22 kHz bandpass filter.
Signal to noise ratio relative to max headroom (27 dBu) = 121 dB.
Signal to noise ratio relative to 0 dBfs (+22 dBu) = 116 dB.
THD at unity gain (0 dB) = 0.0006% measured with 0 dBfs (+22 dBu) input signal and with a 20 Hz/22 kHz bandpass filter.
Frequency response at unity gain (0 dB) = 0.25 dB down at 10 Hz and š3 dB down at 200 kHz.
Instrument Input Response
Gain range = 0 dB to 40dB continuously variable.
Input Impedance = > 1 Meg W.
Noise at minimum gain (0 dB) = -90 dBu measured with a 20 Hz/22 kHz bandpass filter.
Noise at maximum gain (40 dB) = -78 dBu measured with a 20 Hz/22 kHz bandpass filter.
THD at minimum gain (0 dB) = 0.006% measured with š10 dBu input signal and with a 20 Hz/22 kHz bandpass filter.
Frequency response at unity gain (0 dB) = 0.5 dB down at 10 Hz and š1 dB down at 200 kHz.
Frequency response at maximum gain (40 dB) = 6 dB down at 10Hz and š1dB down at 200KHz.
Input Meter
6 LED peak reading meter is calibrated relative to 0 dBfs where 0 dBfs = +22 dBu (the maximum level which can be correctly converted by the optional internal A/D converter before overload occurs).
High Pass Filter
Roll off = 18 dB per octave 3 pole filter.
Frequency range = continuously variable from 30 Hz to 400 Hz measured at the 3 dB down point.
Optical Expander
Threshold hold range = -20 dBfs (0 dBu) to š60 dBfs (-40 dBu).
Expander ratio = 2:1
Attack time = 750 µs.
Release time = 0.25 s to 4 s.
Noise with maximum expansion = -96 dBu measured with a 20 Hz/22 kHz bandpass filter.
Signal to noise ratio relative to max headroom (27 dBu) = 123 dB.
Signal to noise ratio relative to 0 dBfs (+22 dBu) = 118dB.
6 LED meter shows downward expansion calibrated in dB increments.
Vintage Harmonics
Threshold range = -10 dBfs (+12 dBu) to š40 dBfs (-18 dBu).
Compression ratio (Depth switch out) = 1:1.5
Compression ratio (Depth switch in) = 1:3
Mid band centre frequency = 3.5 kHz.
High band centre frequency = 20 kHz.
Band Q = 0.2
6 LED meters show the amount of boost at the center frequency of the band, meter calibrated in dB increments.
Optical Compressor
Threshold hold range = -15 dBfs (7 dBu) to š40 dBfs (-18 dBu).
Compressor ratio (Hard Ratio switch out) = 2.5:1
Compressor ratio (Hard Ratio switch in) = 6:1
Attack time (Slow Attack switch out) = 0.5 ms.
Attack time (Slow Attack switch in) = 5 ms.
Release time = 100 ms to 1 s and then auto release mode when the release knob is turned fully clockwise. Auto release creates a release time dependent upon the average level of the incoming signal.
Noise = -94 dBu measured with a 20 Hz/22 kHz bandpass filter.
Makeup gain = 0 to +18 dB.
Tube Sound
Harmonic generation = 2nd, 3rd and 5th harmonics generated from fundamental frequency of the incoming signal relative to position of the Drive knob.
THD with Drive knob at cool = 0.6% with a š10 dBfs (+12 dBu) 1 kHz input signal measured with a 20 Hz/22 kHz bandpass filter.
THD with Drive knob at warm = 6% with a š10 dBfs (+12 dBu) 1 kHz input signal measured with a 20 Hz/22 kHz bandpass filter.
Tone = 6 dB per octave roll off low pass filter.
Tone frequency range = continuously variable from 4.5 kHz to 30 kHz measured at the 3 dB down point.
Voice Optimized EQ
Breath
EQ shape = Shelving
Peak frequency Shift switch out = 10 kHz
Peak frequency Shift switch in = 16 kHz
Gain range = +/-8 dB
Mid
EQ shape = Peak
Center frequency = 1.3 kHz
Q in boost mode = 0.5
Q in cut mode = 2
Gain range = +8 to š12 dB
Absence
EQ shape = Peak
Center frequency = 3.9 kHz
Q = 3.5
Gain range = 0dB to š10 dB
Warmth
EQ shape = Peak
Center frequency range = 120 Hz to 600 Hz
Q in boost mode = 0.5
Q in cut mode = 2
Gain range = +8 to š12 dB
De-Esser
Threshold hold range = -10 dBfs (+12 dBu) to š40 dBfs (-18 dBu).
De-esser ratio at center frequency = 2:1
Center frequency range = 2.2 kHz to 10 kHz
Q of cut = 3.5
Attack time = 0.5 ms
Release time = 100 ms
Noise = -94 dBu measured with a 20 Hz/22 kHz bandpass filter.
Output Meter
Calibrated for 0 dBfs = +22 dBu and indicates the level after the output fader being sent to both the internal AD converter and the VoiceMaster Pro XLR output.
O/L LED is lit when any section of the unit (including the headphone output) reaches a level greater than 0 dBfs (O/L: LED triggered at +22.4 dBu).
Weight: 5 kg
Dimensions: 482 mm (W) x 88 mm (H) x 180 mm (D)