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.