Trichord Research Ltd. Diablo phono stage with Never Connected PSU

The Diablo NC phono stage is user adjustable with a set of four DIP switches on the underside of the unit. These switches allow for adjustment of cartridge loading and gain setting.

The circuitry is signal non-inverting and constructed using high performance, audio grade bipolar and JFET operational amplifiers from Analog Devices and Linear Technology. Metal oxide resistors and ultra low impedance capacitors throughout for lowest possible noise.

The RIAA equalisation network is part passive and part active. The capacitors and resistors used in this stage are very close tolerance audiophile types.

Four 'State of the Art' ultra low impedance, low noise wide-band voltage regulator circuits are employed to power both channels and are largely responsible for the high sonic performance of the Diablo.

The non-ferrous cabinetry is made of aluminium, a design that reduces Eddy current propagation that can affect sound reproduction dramatically.

The Never Connected power supply version offers the highest sonic performance from this superb upgradable phono stage. The role of the power supply in producing high quality natural sound is absolutely fundamental, rather like the foundations of a house. All power supplies either let through high levels of mains borne interference or worse still in the case of switch mode power supplies actually produce this noise.

Whilst filters can prove effective in removing this noise, they also tend to have an adverse effect on the source impedance of the power supply, producing a sound spectrum with a un-natural tonal balance. The Patented Never-Connected supply overcomes this problem by using a sophisticated switching system to ensure that at no time is there a direct connection between the incoming mains and the connected load thus breaking the conduction path for mains borne noise and interference.