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The Super Stereo DN78 Phantom Valve is a desktop analogue DJ mixer featuring 2 dual input channels, one mono mic channel, 2 stereo USB channels and features rotary faders and a rotary cross-fader.
'It really is silky smooth, listening to the sound from the mixer after connecting it to a turntable and playing some of our favourite vinyl almost brought tears to our eyes, it was such a warming listening experience. ' - DJ Mag
Optional Bakelite knobs shown. Available at an additional cost of £96 GBP. Standard knobs are black with silver tops.
NEW 2018 edition:
New 2 stage RIAA phono pre-amp with +/- 0.5 db from RIAA curve.
4 position capacitance switches for phono cartridge loading.
New high quality mic pre-amp with additional stereo line in via XLR Combo Jack
Improved valve circuitry giving more accurate spacial sound and more drive
Improved cooler running power supply
New channel EQs with nicer frequencies and cuts
Updated Isolator with reduced boost and no crosstalk on cut
Updated internal wiring for greater reliablity
Valve bypass switch on front panel
Boosted master output with up to +24db @ 0.01% THD (valve bypassed – 0.3% with valve)
Manufactured in the UK by Formula Sound
The mixer is designed to the highest audio standard featuring a valve stage giving extra warmth and depth to the sound and is designed for professional DJs, clubs and venues. It is loaded with features to enhance the DJ’s performance and sound.
An audiophile upgrade is now available which comprises of upgraded capacitors and op-amps providing a small but measureable perfomance increase.
Each of the channels is equipped with a standard 3 band eq with +/- 15db of gain at specially selected musical frequencies.
A five times gain control and five point LED meters on each input channel allow for precise matching of input signal levels and smooth Blue Velvet rotary faders ensure a perfect mix. Individual channels can be routed either side using the rotary cross fader.
The DN78 is also equipped with a very powerful Isolator on the output giving +8db of boost and total cut of three carefully selected frequencies. There is also a control to select the mid frequency range offering further cut of the lower end of that range up to the higher end. These filters have a wide Q range to ensure they cover the full spectrum of audio.
There are two high grade phono stage preamplifiers with standard RIAA EQ to ensure faithful full range reproduction from a standard MM record cartridge. These can also be switched to line input levels for convenience.
Uniquely offered on our rotary mixer is a high quality 32bit/384khz four channel sound card built in to the DN78 Phantom Valve enabling easy integration with digital media. The USB interface can be used for playback from most popular DJ software platforms on both Mac and Windows PC.
A high quality MIC channel with a single gain control on the back panel gives up to 56db of gain and feeds the signal over the stereo mix.
FX Send & Return
There is also a stereo effects send and return which allows a pre-isolator signal to be fed into an external effects unit and a stereo return to be fed post Isolator. Both have individual levels controllable from the front panel. The effects return can also be used as an additional stereo source input for line level signals.
A powerful headphone amp ensures more than adequate monitor levels for all types of headphones with separate cue/mix cross fader to check your output mix.
Master & Booth
Finally there is a master section with a powerful 4 way output and separate booth and master level controls. Both outputs feed RCA outputs and full balanced outputs designed for driving long lines, giving more than adequate levels to drive almost any amplifier set up.
Professional stereo analogue VU meters display master output levels. They offer a more precise indication of level than LED meters with -20 to +6db range. A clip level indicator helps to ensure the sound remains clear.
Black Fluted Silver Center knobs, 16mm, 27mm, 33mm provide accurate level control. (Please note that the images show the vintage RCA Viz knobs which are available at additional cost - see product options.)
All our potentiometers are made by ALPS, a company established in 1948 from Japan. The smooth feeling of these potentiometers make the DN78 mixer a pleasure to operate and give precise control.
'How does it sound? Bloody marvellous is the answer, somewhat understated, it sounds ****ing ace and so it should do.' - DJ Magazine
Features of the DN78 Phantom Valve Series:
Rotary cross-fader between CH1 and CH2.
5 LED input monitor VU meter for each channel.
Input gain control giving up to 5x gain.
Headphone crossfader control between the output and cue channel.
Push button PFL cue controls
2 channel stereo mixer
Valve (tube) output stage
3 band Isolator on the output
3 band EQ control on each channel
RCA and XLR balanced output level (booth & main outs)
2 line & 2 phono RCA inputs
4 channel USB Audio (32bit/384kHz out)
Precision Backlit VU meters (output)
LED Clip indicator
Stereo FX send & return
High power headphone output
High quality Alps Blue Velvet faders
Audiophile grade op-amps
High grade toggle switches & knobs
Wooden side panels
DN78 Mixer Technical Specifications:
PHONO STAGE: RIAA 47kohm, S/N 102dB 3 to 100mV. 300pf, Moving Magnetic pick up. MC switch optional – 100–300 uV – 300pf. Standard RIAA curve. Switchable to line inputs.
LINE IN: >47k ohm -10 to +15dBu. S/N 104dB
USB AUDIO: 32 bit @ upto 384khz. 2 x 2 In. S/N <112 dB D/R. Win & MacOSx – No drivers needed for Apple Mac
MIC INPUT: >600 ohm, -47dB to -10dB. Gain +60dB
MIX OUT: (XLR) Servo Balanced XLR male >600 ohm +4dBu.
BOOTH OUT: (XLR) Servo Balanced XLR male >600 ohm +4dBu
MIX OUT & BOOTH OUT: Unbalanced, RCA. 0dB 47K ohm
MAX OUTPUT LEVEL: (XLR) Booth and Master. +24dB.
MAX OUTPUT LEVEL: (RCA) Booth and Master. +20dB
EFFECTS SEND: 47K ohm, +18dB. Stereo TRS, Tip L, Ring R.
EFFECTS RETURN: 4.7K ohm, -20dB to +20dB. Stereo TRS. Tip L, ring R.
ISOLATOR: LOW 0-280Hz, MID 260Hz – 2K, HIGH 2K – 20k (12db/octave) -inf. to +8dB. Flat at centre/Bypass
FREQUENCY RESPONSE: 4Hz – 28kHz +/- 1db
3-BAND BAXANDALL EQ PER CHANNEL: Bass 180hz -26db to +15dB, Mid 900hz +/-12dB, Top 5khz +/-12db
CHANNEL GAIN: -18db – +16db
NOISE: -98dB Ave.
DISTORTION: < 0.05% THD+noise @1kHz
CROSSTALK: < -90dB between channels 1 & 2
SIGNAL TO NOISE RATIO: > 95db
CHANNEL SEPARATION > -85db
HEADPHONE AMP: 900mw into16 ohm. 30 – 120 ohm recommended
CHANNEL METER: Peak reading 5 LED -18, -10, -4, 0, +4db
MAIN METERS: Main Meters -20dB to +9dB LED CLIP: +9 db
RECORD OUT MINI JACK – 0db impedance 47k – Direct valve, fixed output.
AC MAINS: 110 & 240V AC @ 50-60hz
CONSUMPTION: 28W max
FUSE RATING: 100-250v T600ma
MAINS IN: 3 PIN T5 CABLE
DIMENSIONS: 340mm x 230mm x 95mm
VALVE: JRP 5760/ 396a / 2c51 dual triode, triple silver mica, recommended replacement 10000 hours
1 YEAR WARRANTY
Download Super Stereo DN78 Users Instruction Manual