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Focusrite MH443 TwinTrak Pro Platinum Series 2-Channel Preamp/Compressor
Focusrite MH443 TwinTrak Pro Platimun Series 2-Channel Preamp/Compressor Designed principally as an affordable, high-specification dual mono/stereo tracking device, TT Pro (as it's affectionately known) also boasts comprehensive latency-free monitoring, unmatched digital connectivity, and all within a sturdy 2U 19" rack-mount chassis. Each channel features Focusrite's award-winning Platinum preamp, embellished with the option of instant 'air' and variable input impedance for improved microphone performance and extended creativity. A mid-scoop EQ follows, and provides variable frequency and depth of cut for vocal problem solving and miked-up cabinet ambience In pride of place is TT Pro's powerful dual mono/stereo optical compressor. This optical compressor features Focusrite's custom fast-acting optos, alongside side-chain inputs and the ability to operate as a true 'twinned' stereo pair. These circuit design innovations are complemented by a comprehensive set of focused controls. TT Pro is the first Platinum to feature a D/A converter as standard, alongside its optional analogue to digital converter. The D/A converter enables the user to feed mono or stereo digital signals into TT Pro. These signals can be fed either into the stereo latency-free monitoring section, or via line inputs (post- the preamp stage) for further processing. The signal can then return to the digital audio workstation via Focusrite's established stereo A/D converter option. Together, these facilities make TT Pro the perfect analogue interface for any digital audio workstation, and equally the world's first 'hardware plug-in'. MH443 TwinTrak Pro Platinum Series 2-Channel Pream Features• Award-winning Class A discrete transistor-based preamps• Dual mono/stereo optical compressor, featuring custom fast-acting optos • Latency free monitoring with total control over balance, effects, mix and monitor levels • 24-bit/192 kHz D/A input card fitted as standard (included), for processing digital signals or feeding digital signals into the monitoring path • 24-bit/96kHz A/D output card is optional (sold separately). Both the A/D and the D/A feature wordclock (BNC) • Inductor-induced "Air" opens up high frequencies like an expensive transformer-balanced pre amp • Variable impedance for improved microphone performance and extended creativity • Mid scoop EQ for correcting problematic mid frequencies • Direct inputs on the front fascia for both instruments (Jack) and microphones (XLR) • Post preamp inserts and compressor side-chain inserts, for enhanced processing flexibility • 2 ocean blue peak-reading meters, innately beautiful and ideal for catching fast transients • With TwinTrak Pro, Focusrite's fanatical approach to quality design has given birth to twins.Technical Description • Mic Input Response • Gain range = 0 dB to 60 dB continuously variable • Input impedance = 50 Ohm to 3K3 Ohmcontinuously variable • EIN = 128 dB measured at 60 dB of gain with 150 Ohm 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 –36 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 –2 dB down at 200 kHz • Frequency response at maximum gain (60 dB) = –2 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 Ohm from 10 Hz to 200 kHz • Noise at main output with gain set to 0 dB = -94 dBu measured with a 20 Hz/22 kHz bandpass filter • Noise at –10 dBV output with gain at 0 dB = -100 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) = 0.1 dB down at 10 Hz and –3 dB down at 200 kHz • Instrument Input Response • Gain range (High Gain switch out) = 0 dB to 20dB continuously variable • Gain range (High Gain switch in) = 20 dB to 40dB continuously variable • Input Impedance = > 1 Meg Ohm • 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 –10 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 –1 dB down at 200 kHz • Frequency response at maximum gain (40 dB) = 6 dB down at 10Hz and –1dB 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). The meter calibration points are as follows: • Meter panel calibration value Equivalent dBu value • 0dBfs +22dBu (the maximum level the ADC can convert before digital distortion occurs) • -6dBfs +16dBu • -12dBfs +10dBu • -18dBfs +4dBu (the normal signal level in an analogue system to allow headroom for additional processing such as EQ) • -24dBfs -2dBu • -42dBfs -20dBu • Channel Insert • Unbalanced input and output on balanced (TRS) socket as follows: • Tip = Send (Output) • Ring = Return (Input) • Signal level equivalent to –6dB below normal operating level. • High Pass Filter • Roll off = 12 dB per octave 2 pole filter • Cut off frequency: • -3 dB at 120 Hz • -6 dB at 85 Hz • -12 dB at 56 Hz • Optical Compressor • Threshold hold range = -12 dBfs (10 dBu) to –42 dBfs (-20 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 +21 dB. • Compressor Side-Chain Insert • Can be used to input an independent signal to trigger compression or to allow the side-chain audio to be sent in and out of the unit via an external processor, such as an EQ for frequency conscious compression and de-essing of vocals. • Connector is an unbalanced input and output on balanced (TRS) socket as follows:- • Tip = Send (Output) • Ring = Return (Input) • Signal level equivalent to –6 dB below normal operating level. • Mid Scoop EQ • EQ shape = Peak • Center frequency = Variable between 120 Hz and 2 kHz • Cut (Deep switch out) = -6 dB • Cut (Deep switch in) = -12 dB • Q (Deep switch out) = 1.5 • Q (Deep switch in) = 3 • FX Send • Unbalanced output, signal level equivalent to –6 dB below normal operating level. • Noise = -94 dBu measured with a 20 Hz/22 kHz bandpass filter. • Maximum output signal level = +20 dBu • FX Return • Balanced input • Operating level = +4 dBu • Headphones Mix • Unbalanced output, signal level equivalent to –6 dB below normal operating level. • Noise = -94 dBu measured with a 20 Hz/22 kHz bandpass filter. • Maximum output signal level = +20 dBu • Monitor Input • Balanced input • Operating level = +4 dBu • Monitor Output • Balanced output • Operating level = +4 dBu • Noise = -98 dBu measured with a 20 Hz/22 kHz bandpass filter and monitor level knob at maximum output level (fully clockwise). • Maximum output signal level = +26 dBu • DAC Performance • Playback sample frequency = 32 kHz to 192 kHz. • Maximum bit depth = 24-bit • Maximum analogue output level = +21 dBu. • Dynamic Range = 111 dB measured with A weighted filter. • Wordclock BNC connector outputs a regenerated wordclock at the sample frequency contained within the SPDIF signal connected to the RCA connector. • 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 TwinTrak 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)
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Focusrite Focusrite MH444 AD Card for MH443 TwinTrak Pro Focusrite MH434 A/D Card for the ISA220 Focusrite MH443 TwinTrak Pro Platinum Series 2-Channel Pream • Focusrite • Add Comment or Question • Write a review!
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