Heritage Audio

• '73 style Microphone preamplifier
• Equalizer in '81 style
• Max. gain: +80 dB
• Discrete class A technology with Carnhill and St. Ives input and output transformers
• Output control
• -20 dB pad
• Phase reverse switch
• Phantom power: +48 V
• Induction-based 4-band EQ
• Low-pass filter: 3.9 - 5.6 - 8.2 - 12 - 18 kHz
• High-pass filter: 27 - 47 - 82 - 150 - 270 kHz
• Low EQ (peak or shelving): 33 - 56 - 100 - 180 - 330 Hz
• Low-Mid EQ points (with Hi-Q): 220 - 270 - 330 - 390 - 470 - 560 - 680 - 820 - 1000 - 1200 Hz
• High-Mid EQ points (with Hi-Q): 1.5 - 1.8 - 2.2 - 2.7 - 3.3 - 3.9 - 4.7 - 5.6 - 6.8 - 8.2 kHz
• High EQ (peak or shelving): 3.3 - 4.7 - 6.8 - 10 - 15 kHz
• 1 Microphone input: XLR
• 1 Line input: XLR
• 1 DI input: 6,3 mm jack
• 1 Line output: XLR
• Format: 19" / 1 U

• Carnhill transformers
• Input impedance: 10 kOhm
• Output impedance: Less than 75 Ohm
• +6 to -20 dB Class A Line preamp
• HF: +/- 16 dB shelving (10, 12, 16 or 20 kHz adjustable)
• LF +/- 16 dB shelving (35, 60, 110 or 220 Hz adjustable)
• MF +/- 18 dB peak (adjustable centre frequency 0.36, 0.7, 1.6, 3.2, 4.8 and 7.2 kHz)
• Fixed Q
• Max. gain: 6 dB
• Design: Module 500

• 80 dB Class A Microphone Preamplifier with 20 dB Pad
• 50 dB Class A Line Preamplifier
• DI input
• DI-THRU socket with groundlift switch
• Separate gain controls in the input and output to saturate the input signal without overloads in the output signal
• Variable high pass filter
• Phase circuit
• Impedance: Mic: 1,200 ohm HI, 300 ohm LO, Line: 10 kOhm, DI:> 2 MOhm
• Carnhill input and output transformers
• +48 V phantom power
• Internal power supply
• Mic input XLR
• Line input XLR
• DI input 6.3 mm jack
• Line output XLR
• Desktop housing with wooden side panels and straps

• 80 dB Class A microphone preamplifier
• HI-LO selectable input impedance
• High gain settings have a higher input impedance
• Ideal for older ribbon microphones
• 50 dB Class A Line preamplifier
• Discreet Class A Ultra High Impedance J-Fet Direct Input to a high-quality Neutrik jack
• The DI input is in front of the input transformer, which is directly in the signal path
• Class A single ended 2N3055 output stage with enormous headroom
• Gold-plated Neutrik XLR connectors for inputs and outputs
• PAD: 20 dB Mic input PAD in front of the input transformer to avoid overdriving the transformer
• HI PASS FILTER: Active third-order discrete filter (Bessel)
• 80 Hz Hi Pass filter
• 18dB / Octave slope
• OUTPUT control allows turning down in order to intentionally override the preamp.
• External power supply to avoid electromagnetic interferences and thus "hum"
• Carnhill input and output transformer
• 3 Gain stages
• Marconi style knob and engraved "vintage" push buttons

• On Slot technology (power regulation for each individual slot)
• Link function (each channel can be linked to the next channel at the touch of a button)
• Power supply with 400 mA per rack
• Phantom power supply (140 mA max. total demand)
• Independent status LEDs per slot
• External power supply unit
• XLR connections
• Sheet steel housing with aluminium front panel
• Design: 500 module series, 3U
• Weight: 2.5 kg

• Reproduction of the "MOTORCITY EQualizer"
• Historically correct control layout with specially shaped Bakelite buttons
• Identical equalizer circuit (including the specially made capacitors and inductors from the 1960s)
• 7 Frequency bands across the entire sound spectrum from 50 Hz, 130 Hz, 320 Hz and 800 Hz up to 2 kHz, 5 kHz and 12.5 kHz with stepped rotary switches for boosting or cutting by 8 dB in 1 dB steps
• Bypass switch
• On/Off switch
• UTC replica input transformers with optimised transfer ratio
• Output amplifier with Carnhill transformer
• 1 Line input: XLR
• 1 Line output: XLR
• Power supply: External power supply 100 - 240 VAC, 50/60 Hz, 0.6A, 48V DC, 520 mA, maximum 25W
• Construction: 19" / 2U
• Weight: 4.7 kg

• 8-Channel transformer-coupled Class-A microphone preamplifier and AD/DA converter 24 bit / 192 kHz
• 3-Stage Class-A preamps in 73 style
• Carnhill transformer
• +48 V phantom power switchable per channel
• Low cut and phase reverse switchable per channel
• HP filter for channel 1 and 2: 20 - 250 Hz
• Construction: 19" / 3 U
• Dimensions (W x H x D): 482 x 88 x 280 mm
• Weight: 9.45 kg
• Incl. external power supply unit

Connections:

• 8 Microphone inputs: XLR
• 8 Line inputs: Sub-D25
• 2 HI-Z instrument inputs: 6.3 mm jack
• 8 Line outputs: XLR
• 8 Line outputs: SubD-25
• 8 ADC return: SubD-25
• 2 ADAT outputs (SMUX)
• AES/EBU / S/PDIF: Coax 9-pin
• Word clock input and output: BNC

• Replica of the "MOTORCITY EQualizer
• Historically correct knob layout with specially shaped Bakelite knobs
• Identical equalizer circuit (including the specially made capacitors and inductors from the 1960s)
• 7 Frequency bands across the entire sound spectrum from 50 Hz, 130 Hz, 320 Hz and 800 Hz up to 2 kHz, 5 kHz and 12.5 kHz with stepped rotary switches for boosting or cutting by 8 dB in 1 dB steps
• Bypass switch
• On/off switch
• UTC replica input transformers with optimised transfer ratio
• Output amplifier with Carnhill transformer
• 1 Line input: XLR
• 1 Line output: XLR
• Power supply: external power supply 100 - 240 VAC, 50/60 Hz, 0.6A, 48V DC, 520 mA, max. 25W
• Format: 19" / 2U
• Weight: 4.7 kg

Heritage Audio Motorcity EQualizer Stereo Set, contains 2x Motorcity EQualizer; technical specifications per Unit: passive 1-channel analog equalizer; replica of the "MOTORCITY EQualizer"; historically accurate knob layout with custom molded Bakelite knobs; identical equalizer circuitry (including custom 1960s capacitors and inductors); 7 frequency bands across the sound spectrum from 50 Hz, 130 Hz, 320 Hz and 800 Hz to 2 kHz, 5 kHz, and 12.5 kHz with stepped rotary switches to boost or cut 8 dB in 1 dB steps; bypass switch; on/off switch; UTC replica input transformers with optimized transfer ratio; output amplifier with Carnhill transformer; connectors: 1x line input XLR, 1x line output XLR; external power supply: 100 - 240 VAC, 50/60 Hz, 0. 6A, 48V DC, 520 mA, max. 25W; Design: 19" 2U; Weight: 4.7 kg

• Analog bus and master compressor with transformer-coupled inputs and outputs
• Vintage sound character through 1073-inspired amplifier circuit with Carnhill transformer and diode bridge circuit
• Extremely fast attack and release control times
• Flexible sidechain path with 5-stage filter with high-pass and peak characteristics
• Rasterized blend control for parallel compression
• Rasterized controls for Threshold, Ratio, Attack, Release and Gain Makeup
• Per channel input and output (XLR) and sidechain send/return (6.3 mm jack)
• Frequency response: 20 Hz - 20 kHz
• Threshold: 20 - 20 dBu
• Ratio: 1.5:1 to 20:1
• Attack time: 50µs to 20ms
• Release time: 25ms to 400ms
• Auto circuit for program dependent compression
• Side-chain filter high-pass: 80, 160, 5000 Hz
• Side-chain filter peak: 1, 3 kHz
• Amplification: 0 to 10 dB in 2 dB steps
• Power supply: 100 - 240 VAC (external universal power supply)
• Dimensions: 19", 1 HE

• Sidechain filters: Off, 50, 100, 200, 350
• Direct access to continuously variable slope
• Frequency response: 40 Hz to 15 kHz, +/- 1 dB
• Input impedance: 2 kOhm
• Output impedance: 600 Ohm
• Output level: +4 or +8 VU (+30 dBu clipping point)
• Inherent noise: below -82 dBu
• Harmonic distortion: less than 1% up to an output level of +18 dBu (no limiting)
• VU meter
• 1 Line input: XLR
• 1 Line output: XLR
• Construction: 19" / 3 U
• Dimensions (W x H x D): 48.2 x 13.4 x 20 cm
• Weight: 7.4 kg

• Preamplifier with Carnhill input and output transformers
• 3-Step discrete class A design
• Up to 80 dB gain
• 20 dB Pad
• Phase reversal
• Input impedance knob between 300 and 1200 Ohm
• DI Input with discrete class A JFET swich, as well as passive thru output to power a separate amplifier
• 73 EQ with bell modes for high and low shelving sections
• Successor compressor with blend control and sidechain filter with 5 frequency options
• Link option for stereo compression with two BritStrips
• Ratio: 1.5:1 to 10:1
• Attack time: Slow, fast
• Release time: 50 to 400 ms
• Auto program-dependent
• Routing of compression and equalizer
• 1 Microphone input: XLR
• 1 Line input: XLR
• 1 Line output: XLR
• DI input: 6.3 mm jack
• Thru output: 6.3 mm jack
• Sidechain send/return: 6.3 mm jack (unbalanced)
• Link connection: RCA
• Input for external power supply
• Format: 19" / 1 U

• Carnhill-based, transformer-coupled balanced inputs and outputs
• Class-A output stage in '73 style
• Asymptotic EQ section: HF selectable between 8, 10, 12, 15, 20 and 24 kHz, boost / cut maximum 10.5 dB in 0.5 dB steps, LF HF selectable between 470, 360, 220, 110, 60 and 20 Hz, boost / cut maximum 10.5 dB in 0.5 dB steps
• Filter section: 12dB / octave high pass filter, -3dB point selectable at 160, 82, 47, 20 and 15 Hz
• 12dB / octave low pass filter, -3dB point selectable at 10, 12, 18, 22 and 30 kHz
• Bypass function
• Connectors: 2x XLR input, 2x XLR output
• Switch for M/S
• Construction: 19" / 1U
• Includes external power supply unit

• For a 500 slot of a module frame
• Material: Metal
• Colour: RAF-Blue-Grey
• Dimensions (W x H): 3.81 x 13.5 cm

• On Slot technology (power regulation for each individual slot)
• Link function (each channel can be linked to the next channel at the touch of a button)
• Power supply with 400 mA per rack
• Phantom power supply (140 mA max. total demand)
• External power supply unit
• XLR connections
• Sheet steel housing with aluminium front panel
• Design: 500 module series, 3U
• Weight: 1 kg

• Fully tube-based amplifier stage and fully transformer-balanced inputs and outputs
• Separate tube saturation section for tube saturation
• Adjustable attack and release times
• 5 Built-in filter options for the sidechain section
• VU meter
• Gain: -10 to +30 dB
• Ratio: 2:1 to 10:1
• Threshold: 10 to -40 dB
• Sidechain filters: HP: 80 Hz, 160 Hz, 5 kHz, Peak: 1 kHz
• Dimensions (W x H x D): 482 x 134 x 153 mm
• Weight: 3.364 kg

• 80 dB Class A microphone preamplifier
• Selectable input impedance
• Ideal for ribbon microphones
• 50 dB Class A line preamplifier
• Discrete Class A J-Fet DI input with high input impedance
• Class A single ended
• 2N3055 output stage
• 20dB pad switch
• Phase reverse and low cut
• Variable hi-pass filter 20 - 220 Hz
• +48 V phantom power switchable
• Output control
• Carnhill input and output transformer
• Construction: 500 modules

• Desktop control unit
• Bluetooth connectivity
• Analog circuits with gold-plated switching relays in the complete signal path
• Radio controlled unit connected to the rack unit
• 64-stage relay damping system with 1 dB rasterization for master volume control
• Illuminated keys with lettering
• Integrated talkback microphone
• Suitable for 5.1 or stereo applications
• Independent MIX output
• Integrated 24 bit / 96 kHz AD converter with switchable AES/EBU, SPDIF and Toslink inputs
• Independent subwoofer output
• 2 Headphone amplifiers
• Subwoofer management
• Includes charging station for the control unit
• Remote dimensions (W x D x H): 140 x 215 x 70 mm
• Dimensions of rack unit: 19'' / 2 U
• Weight of remote: 1.36 kg
• Weight of rack unit: 4.74 kg

Connections:

• 10x XLR output
• 2x XLR mix out
• DSUB25 Cue input and output
• DSUB25 input (+4 dBu) for 5.1 or 4x stereo
• 2x XLR input
• 2x 6.3 mm stereo jack headphone output (source signal can be switched between mix and cue)
• 1x AES/EBU XLR input
• 1x S/PDIF coaxial RCA input
• 1x S/PDIF optical Toslink

• Fully discreet class A circuit
• Three Carnhill / St. Ives transformers per channel
• Exact adjustment of the compressor characteristics / response from channel to channel thanks to a unique diode bridge circuit
• True bypass per channel
• Line input impedance: 10 kOhm, transformer balanced
• Output impedance:
• Frequency range: 20 to 20000 Hz
• Threshold: -20 to +20 dBu (compressor), 0 to +20 dB (limiter)
• Ratio: 1.5: 1 to 6: 1 (compressor)
• Attack: Fast / Normal (compressor, limiter)
• Release: 100 ms to 1,500 ms, 2x depending on the auto program (compressor)
• Release: 50 ms to 800 ms, 2 x auto-program dependent (limiter)
• Makeup Gain: 0 to 20 dB
• 2 Line inputs: XLR
• 2 Line outputs: XLR
• Design: 19"/ 2 U
• Includes external power supply (100 - 240V)