Tom Evans Audio Design phono stages include:

• The Microgroove ($1,050) uses high grade silicon. The signal path is DC coupled. Built as a steereo amp powered by by standard industry voltage regulators. Like all Tom Evans phono stages, Microgroove can be configured to suit any moving coil or moving magnet cartridge. Great entry level phono stage upgradable to The Plus.
• The Microgroove x ($1,192).
• The Microgroove plus ($2,100) is a stereo phono-amp that has one of Tom Evans’ Lithos 7 Class A regulators in place of the standard industry regulators. This improves the sound significantly, lowers the hoise floor, faster risting and falling edges of notes highlighting the spaces between them. John Cage would have had a hay day.
• The Groove ($4,000). This dual mono phono-amp uses one Lithos 7 regulator per side to supply power to each mono signal path p.c.b. All resistors are Holco precision metal film. All silicon is premium grade. The regulators are powered by a dual mono mains power supply. Since its launch in the UK, it has become the industry standard. The Groove can be upgraded to the Plus spec.
• The Groove x ($4,725).
• The Groove plus ($7,600). In this design the mains pcb has been replaced by the Lithos 6, a complex class A regulator (as used in the pulse power supply). Its outputs then feed the dual mono Lithos 7’s on the signal pcb’s. The external mains supply box contains a 70 watt transformer designed and manufactured in house. This transformer has an electrostatic screen to remove any R.F. noise, then rectified, smoothed, and regulated before leaving the box and heading for Lithos 6. The ultra low noise and distortion of this product provide audiophiles with the greatest possible dynamic range and resolution available.
• The Groove+ SRX ($8,900) has adjustable load and gain. The Groove+ SRX,in addition to the loading pcb has a front end gain stage that has 50% less noise and distortion than the Groove and Groove+.
• Upgrade of Microgroove to Groove Plus ($4,600).

Tom Evans Audio Design pre-amps include:

• The Vibe ($6,000) is a DC coupled preamp that has five sets of stereo inputs, one pair of record out, and two pairs of outputs enabling up to four sets of mono power amps to be driven. The output stages are capable of driving 100 meters of cable! The output stage is relay protected and has DC detection and DC protection. The volume is controlled by a 24 step DACT attenuator with channel matching of plus/mius 0.05db, attenuation accuracy plus/minus 0.05 db, THD 0.0001. The 5 way switch used for input switching.
• Two optional power supply upgrade for the vibe $4,950
• The Vibe and Pulse – two power supplies ($10.950). The Pulse power supply provides the Vibe preamp with the ultimate in ultra low noise class A regulator technology. The transformer used to power The Pulse is designed and manufactured in house. It was developed to eliminate Radio Frequency (RF), unwanted hash, sounds like glare. The sonic benefit of adding The Pulse to The Vibe is an obvious increase in dynamic range and resolution coming from a black background. The Pulse 2 is a one box PSU and looks like a mini Linear A.

the amps include two products, very different in design:

• The Linear A amp ($8,900) is a 25 wpc hybrid Class A single ended stereo power amp. This amplifier is a new precision design with extremely low distortion. Although the Linear A is only rated at 25.2 watts p/c, it is able to produce 150 decibels of dynamic range. The output transformers have been designed to produce real power into loudspeaker impedances of 5 ohms and above. Recommended loudspeaker sensitivity of 87 db or higher.
• The Linear B amp ($17,000) is a new breed of power amp. It uses Differential Global Feedback, a world first. As a 55 watt mono amplifier, The Linear B is able to produce 150 decibels of dynamic range. The output transformers have been designed to produce real power into loudspeaker impedances of 3 ohms and above.

Tom Evans electronics contain phase error correction circuitry. To ‘get’ what they are really capable of you need a speaker that will show the spatial cues (because of this the ear / brain is able to make much more sense of what it is being fed, it sounds like more information gets in) needed to reproduce a real stereo picture in true perspective. So you can now see the importance of this speaker design to Tom Evans.

While Tom Evans is best known for his phono amps, his amplifiers the Linear A and B’s and his pre-amp Vibe are as good as the Groove +SRX. Tom has essentially put over 25 years of his life in re-producing music better and better. In fact, in recent years he has been working on building a pair of speakers he would love enough to put his name on it.

SORAsound is proud to have a pair of Tom Evans speakers (6,000 GBP) on demo in our showrooms. All of the speaker electronics were designed using a Jordan Jx92s run full range without a crossover. In this new design the Jordan driver is limited to 120 Hz only by the volume of air behind it (lowering distortion with the reduced excursion without any crossover parts). The bass system is deep tight and very fast. It works from 120Hz down. This driver is (like most mid bass units ) is a little peaky at 2Khz and because it starts to roll off at 120Hz the peaky rubbish is greater than 24db down (inaudible). Because it has a narrow bandwidth, it does not excite the cabinet (no box honk). Tom Evans is on a mission to reproduce the recorded arts accurately.