The Triton Audio D2O Stereo Preamp is a low noise discrete microphone preamp – a development of the famous German V series preamps, widely recognized as one of the best sounding preamps. These preamps were used at Abbey Road to record The Beatles, Pink Floyd among many others. Today V series preamps are still in demand, although most units are now at least 35 years old and need to be rebuilt or refurbished.
D2O Stereo comes in a high quality 19″ aluminum enclosure and has a built in power supply. A big Stereo sound in a single unit rack!
D2O’s general layout consists of a Lundahl 1571 input transformer followed by 2 single ended gain stages. The second gain stage can be selected to be either a high gain FET or a Tube stage. when the high gain, all FET circuit is engaged D2O becomes an ideal companion for microphones with a relatively low output like ribbon microphones. With the hybrid FET/Tube circuit is engaged the sonic benefits of having a tube in the signal path can be utilized. Output drive is supplied by a discrete low impedance FET buffer with superb sonic properties. Quality Paper in oil coupling capacitors are used, all other used components are high-end grade as well.
LOW NOISE/LOW ESR POWER SUPPLY
In single ended preamp designs the quality of the power supply is crucial, D2O is fitted with a discrete low ESR voltage regulator built with low noise components enabling optimal performance to the amplifier circuit.
SWITCHABLE TRANSFORMER RATIO/INPUT IMPEDANCE
By selecting the transformer ratio switch a selection between a 1:1.75 (LO) or 1:3.5 (HI) transformation ratio can be made. Besides setting voltage gain, this also switches the input impedance of the amplifier between 2.25 kOhm and 6.25 kOhm. Different transformation rate and impedance selection options are very desirable as they allow for more sonic options from the connected microphone.
SELECTABLE ALL FET OR TUBE-FET CIRCUIT
The Tube-FET switch determines whether D2O functions with the hi-gain, all FET or hybrid Tube-FET circuit, each with its unique sonic character.
Phase reverse switch
Separate low noise power supply
Comes with 2x Triton Audio Airhead for attenuation
D2O is a low noise discrete microphone preamp, it is a further development of the famous German V series preamps, widely recognized as one of the best sounding preamps. These preamps were used at Abbey Road to record The Beatles, Pink Floyd to name a view. Today the V series preamps are still in demand, although most units are now at least 35 years old and need to be rebuilt or refurbished.
The D2O mono is a single unit preamp housed in a rugged aluminum enclosure. The portable format is ideal for the new generation of mobile recording interfaces.
D2O’s general layout consists of a Lundahl 1571 input transformer followed by 2 single ended gain stages. The second gain stage can be selected to be either a high gain Fet or a Tube stage. when the high gain, all Fet circuit is engaged D2O becomes an ideal companion for microphones with a relatively low output like ribbon microphones. With the hybrid Fet/Tube circuit is engaged the sonic benefits of having a tube in the signal path can be utilised. Output drive is supplied by a discrete low impedance Fet buffer with superb sonic properties. Quality Paper in oil coupling capacitors are used, all other used components are high-end grade as well.
Low noise / low esr power supply
In single ended preamp designs the quality of the power supply is crucial, D2O is fitted with a discrete low esr voltage regulator built with low noise components enabling optimal performance to the amplifier circuit.
Switchable transformer ratio / input impedance
By selecting the transformer ratio switch a selection between a 1:1.75 (LO) or 1:3.5 (HI) transformation ratio can be made. Besides setting voltage gain, this also switches the input impedance of the amplifier between 2.25KOhm and 6.25 KOhm. Different transformation rate and impedance selection options are very desirable as they allow for more sonic options from the connected microphone.
Selectable all Fet or Tube-Fet circuit
The Tube-Fet switch determines whether D2O functions as an hi gain, all Fet or hybrid Tube-Fet circuit, each with its unique sonic character.
Phase reverse switch
Separate low noise power supply
Comes with 1x Triton Audio Airhead for attenuation
The Airhead is a passive -15dB attenuator plug which lets phantom power pass through. When recording very loud sources such as drums, the signal from the microphones is often very hot. The Airhead attenuates the signal before it hits your favourite preamp. The sonic character of your preamp is more emphasized, because you can work with a more usable gain range (on the preamp).
The Triton Audio Phantom Blocker blocks phantom power while leaving the audio signal intact. phantom power can be applied to either the male or the female side of Phantom Blocker’s XLR connector and will not reach the opposing XLR connector while the audio signal travels without restriction in both directions.
Some (older) preamps are sensitive for phantom power at the input. The preamp’s input transformer cannot handle phantom power from another source. The transformer’s thin silk isolations can burn out because a burst of phantom power switching on creates a high voltage in the input transformer, to prevent this a complete blocking is needed.
UNBALANCED TRS TO XLR CABLES
When connecting an unbalanced TRS to XLR cable pin 3 of the XLR connector is directly connected to ground, creating a short, this can damage input transformers and under-dimensioned phantom power circuits.
BALANCED DEVICE OUTPUTS
Phantom blocker is a great solution to protect the output of any device connected to the XLR input of a mixing desk or preamp which has phantom power switched on, e.g. your computers audio interface.
There are microphones (mainly ribbon microphones) which do not tolerate phantom power. Connecting a ribbon microphone to a cable which has phantom power applied sends a rush of current through the microphones transformer, this current gets amplified by the transformer into the primary circuit of the microphone and forces the ribbon out of the magnetic field it is suspended in, this can permanently stretch the ribbon.
Blocks phantom power while leaving the audio signal intact
For microphone preamps, microphones, device outputs, or anything else you wish to protect from phantom power
Please note: Before connecting the device you wish to shield from phantom power make sure Phantom blocker is attached, have phantom power switched on and wait 5 seconds during which Phantom blockers internal bleeder resistors will cancel out voltage differences. Connecting in this order prevents the transfer of an initial AC voltage burst created by the phantom power switching on.
The Triton Audio True Phantom Power Supply provides 48v power to your condenser microphones.
The advantages of this True Phantom are easily heard and will work with all Phantom powered microphones. Literally a breath of fresh air when used with any such mic.True Phantom does not affect the frequency response of the microphone but lowers the mic output’s THD significantly.
For powering condenser microphones, the IEC 61938 Phantom Power supply has been the standard for years. Although being proven technology, there are several disadvantages to the current implementation. The microphone signal, for instance is not completely available to he microphone preamp. To the microphone’s circuit, the 6K8 resistor presents a load, this causes distortion and reduces the available signal. Also, with the IEC 61938 Phantom Power implementation, isolation from the rest of the preamp or mixer circuit is not complete, this can negatively affect noise performance.
True Phantom uses patented technology which overcomes these problems. True Phantom’s electronics enable the microphone to operate at no-load condition, which lowers distortion, compared to the current implementation it achieves lower distortion and an increase of the signal-to-noise ratio.
Lowers THD on condenser microphones
XLR in and Outputs
Power on indicator
Ground lift switch
Built-in High end Phantom blocking circuit
Direct switch, bypasses the Phantom Blocking circuit
FetHead Filter is a Fethead version with a built-in 6dB/octave high pass filter with a corner frequency of 220Hz (other cutoff frequencies available on request). It is specially designed for microphones which exhibit an excessive proximity effect / low frequency response, like long motor ribbon microphones. The components which make up the filter are not directly in the signal path but are applied to the components which set the gain of FetHead Filters amplifier, thus making it frequency dependant. This way the sonic character which makes a FetHead attractive to the ear is preserved.
Protects the microphone
Some ribbon microphones do not tolerate phantom power. FetHead’s circuit uses 48v phantom power but shields it from the microphone, so the microphone is protected.
For Ribbon and dynamic microphones
6dB per octave high-pass filter with corner frequency of 220Hz
FetHead Germanium is a high quality, in-line microphone preamplifier. It provides a punchy and direct, ‘larger than life’ germanium sound for ribbon and dynamic microphones, adding classy Germanium harmonics. Sounding full and rich it is reminiscent of much higher priced vintage gear, making FetHead Ge’s desirable coloration a really great addition to (Interface) preamps which sound rather neutral.
For Ribbon and Dynamic microphones
Great addition to neutral sounding preamps
New old stock Germanium transistor
Easy install – 2 clicks and done
Germanium transistors were widely used in earliest transistor designs by Neve, EMI, Telefunken, and Fairchild, and have developed a reputation for a decidedly vintage mojo that remains sought after today. We created a novel hybrid circuit that consists of low noise JFets and a hand-selected ‘new old stock’ germanium transistor to take full advantage of the “Germanium” sound and at the same time achieve the same sonic quality we are known for.
Protects the microphone
Some ribbon microphone do not tolerate phantom power. FetHead Germanium circuit uses 48v phantom power but shields it from the microphone, your microphone is protected.
FetHead Phantom is a FetHead version which allows phantom power to reach the microphone. It was developed after several requests from different audio engineers to build a FetHead for condenser microphones with low output. We tested FetHead Phantom on a broad range of condenser microphones and are very happy with the results. It works well with electret microphones like the countryman or an AKG C1000. These are microphones which consume very little power, FetHead Phantom also works great on “real” condenser microphones like a U87 or even with an Oktava MK319 which consumes a hefty 8mA!
FetHead Phantom can be distinguished by a red dot below the TritonAudio label.
Inspired by the positive results of the BigAmp we wondered if a phantom powered, high quality preamp preceding the microphone cable could improve the sound quality of a ribbon or dynamic microphone. the results were more then convincing. Enter FetHead, our latest innovation in phantom powered preamp design. While testing FetHead we noticed an overall increase of sound quality and a change of tonal character of the attached dynamic microphone towards a more open, controlled sound.
Which microphones benefit
In short, we noticed an improvement on all tested dynamic microphones. A Shure SM57 or SM58 for instance, sounds more responsive over a broader frequency range. When mated with a high-end dynamic microphone like a Sennheiser MD441, or Shure SM7 FetHead really shines. Ribbon microphones benefit greatly too because of a much better impedance match, which lessens the load on the microphone, thus giving it better transient response characteristics. FetHeads high quality, low noise signal amplification also extends the usable range of a ribbon microphone, by making it more suitable for recording softer passages without introducing noise.
Protects the microphone
Some ribbon microphones do not tolerate phantom power, FetHead’s circuit uses Phantom power but shields it from its input (and the microphone’s output), as a result it offers effective protection to the microphone.
Fethead uses low noise jfets configured as a double class a amplifier. Jfet’s are among the most quiet amplifying elements available today. The calculated noise figure of the FetHead based on the jfet’s datasheet is lower than we are able to measure.
How it works
Attach FetHead on to a balanced microphone cable and plug it in a dynamic microphone, switch on phantom power and enjoy FetHeads Natural open sound!
IN LINE MICROPHONE PREAMP FOR LIVE AND BROADCAST APPLICATIONS
FetHead Broadcast is an in-line microphone preamp specially designed for operating in challenging environments.
FetHead Broadcast was developed in conjunction with Dutch Broadcasting and facility service company CineVideoGroup. it is Based on technology used in our product FetHead and is fitted with a high quality jfet preamp, followed by a low impedance output buffer to enable output drive to long cables (up to 3kM). It offers 27dB’s of low noise, high quality amplification which can be applied to either dynamic or condenser microphones as phantom power is transferred to the microphone. In Broadcast or live performance situations, a microphone signal often travels through long cables before reaching the mixing desk. When small microphone signals travel along power lines or dimmed light cables, ( audible ) signal interference is likely to be induced into the microphone cable which results in a polluted signal. FetHead broadcast amplifies the microphone signal before the cable and greatly improves the signal to noise ratio offering a much higher quality signal to the mixing desk.
Because its phantom powered no mains supply or batteries which could stop working during “on air” time / operation are required.
Low noise Class A JFet amplifier
27dB’s of amplification
Internal supply power filtering
Low impedance output buffer
High voltage protection
Reverse polarity protection
For all types of microphones
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