Trichord Dino MK 2 Audiophile Phono Preamp

Artech Electronics is the North American distributor of Trichord Research products.


Dino Mk 2 - Stereo Phono Preamplifier



Release the magic of your vinyl collection with the award winning Trichord Dino Phono preamplifier. The Dino provides superb sound quality at an affordable price. The Dino will accept a wide range of Moving Magnet (MM) or Moving Coil (MC) cartridges and provides for easy gain and loading adjustments via DIP switches on the underside of the unit. While it is supplied as standard with a basic 40 VA toroidal power supply, several upgrade paths are available such as the Dino+ Power Supply, Generation 2 Never Connected Power Supply and the High Performance Power Interconnect Lead.

Technical Specifications:

The circuitry is signal non-inverting and constructed using high performance, audio grade bipolar and JFET operational amplifiers, metal oxide resistors and ultra low impedance capacitors throughout for lowest possible noise. The RIAA equalisation network is fully passive and located between two active gain stages. The capacitors and resistors used in this stage are very close tolerance audiophile types. Two state of the art ultra low impedance, low noise wide-band voltage regulators are employed to power both channels and are largely responsible for the high sonic performance of the Dino.

Cartridge loading resistance: 33 ohms, 100 ohms, 1k ohms, 47K ohms

Cartridge loading MC 1.1nF
Capacitance: MM 100pF

Switch selectable gain:

MC 74dB For very low output cartridges (0.1 - 0.25mV)
MC 70dB For low output cartridges (0.25 - 0.4mV)
MC 63dB For normal output cartridges (0.4 - 0.6mV)
MM 52dB For low output cartridges (2 - 3mV)
MM 48dB For high output cartridges (3 - 5mV)

RIAA reproduction characteristics: 20Hz - 20KHz +/-0.25dB

Dimensions: 185mm x 58mm x 112mm (D x H x W)

Standard Toroidal Power Supply:

The ABS moulded housing contains an in-line low noise 40VA toroidal transformer. AC current is fed to the Dino where it is rectified to DC and regulated with two high performance, wide bandwidth Super Regulators.

Dimensions: 84mm x 50mm x 84mm (D x H x W)

   

Dino+ Upgrade Power Supply


 

The Dino+ Power supply upgrades your Dino to a higher level of sound reproduction accuracy.

Technical Specifications:

The 'Dino +' Power Supply unit comprises of two completelly independent and isolated DC supply circuits. One for the positive voltage rail and one for the negative, The specially made low noise audio 80VA toroidal transformer is followed by two bridge rectifiers built with ultra fast soft recovery diodes for low RF generation. The bridges are followed by RC/RC filtering comprising of 4 x 1800uF capacitors before conventional 3 pin voltage regulators. This level of filtering and regulation provides very low noise power supply lines before entering the main amplifier unit.

Power is delivered to to the main unit via a 4-way PTFE insulated, silver plated copper lead. The power supply to the Dino phono amplifier is further regulated by two on board ultra low noise wide bandwidth voltage regulation circuits - one positive and one negative rail. These rails are shared by both channels.

Dimensions: 185mm x 58mm x 112mm (D x H x W)

Dino Generation 2 "Never Connected" Upgrade Power Supply



The Never Connected power supply is the ultimate power supply upgrade for the Trichord Dino phono stage, allowing it to reach its maximum sonic potential. Its use results in a more transparent, open and natural sound. The Never Connected power supply has completely different electronics to the standard 'Dino+' power supply. This power supply uses the revolutionary noise reduction circuitry that is called 'Never Connected'.

Although the regulation circuit is physically connected to the incoming mains, it is disconnected electrically. A monitoring circuit detects the portion of the sinewave that is charging the first of a pair of electrolytic capacitors. Once this first capacitor is fully charged, the diode bridge rectifier turns off and a mosfet switching circuit transfers the charge from the first cap to the second. This cycle is repeated continuously. At no point in time is the regulation circuitry electrically connected to the incoming rectified mains - hence the term 'Never Connected'. The motor "sees" a pure DC power source as if it were running on a battery. The overall result is a large and measurable reduction in mains borne noise. This dramatic reduction of mains borne noise enables the Dino phono circuit to give out its very best.

The Never Connected power supply is virtually unaffected by AC mains quality. It is a significant upgrade over the standard power supply and Dino+ power supply. The casing matches the Dino phono amp and comes complete with an IEC detachable high quality mains cable. The Never Connected power supply uses a standard 3-pin IEC mains socket so you can use one of the many high end audiophile mains cables offered by a number of manufacturers if you prefer.

Dimensions: 185mm x 58mm x 112mm (D x H x W)

 
Dino High Performance Upgrade Power Lead

 

This lead replaces the standard power interconnect lead provided with the Dino+ or Dino Never Connected power supply. Utilizing superior conductors and construction tecniques, it carries the DC power between the power supply and the Dino phono stage. You can expect a significant sonic performance upgrade when this lead is used.

 

 

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