Great unit used for two years and replaced with McIntosh MA 352. Any Questions or photo needs, just ask! Below info from Arcam ad page.At the heart of the C30 is an ultra sophisticated power supply section with multi-stage regulation and a massive toroidal transformer which combine to produce the quietest and most stable environment for handling high definition audio signals. This low noise supply ensures a rock solid soundstage in much the same way as a tripod provides a base for exceptionally clear and detailed photographs. Many music enthusiasts have extensive and treasured vinyl collections. Because of this, the C30 comes complete with a very high-quality phono stage module for moving coil and moving magnet cartridges.The C30 preamplifier uses Arcam’s sophisticated software system control that allows the user to switch inputs without changes in volume level, and to choose volume control settings and display options. The C30 uses carefully selected audiophile grade components throughout. Critical components also benefit from the application of sorbothane dampening material to minimise the microphonic effects that can mask low level detail in the music. The multi-layer chassis incorporates a special vibration dampening material called Acousteel that has been used with great success in other FMJ products.The C30 comes equipped with both single ended and balanced output stages. Most people will use the single ended phono outputs to connect to an adjacent power amplifier; however, where long cable runs are used in conjunction with Arcam’s P1 monobloc amplifiers, better results can be obtained by using the XLR balanced outputs provided. The C30 also incorporates a separate high quality headphone output that is driven by a separate headphone amplifier section.The preamplifier is fully controllable with the Arcam system remote and also features a standby state to enable the C30 to be switched on or off from the comfort of your favorite armchair. Moreover, it can provide a 12-volt trigger output to turn on compatible Arcam power amplifiers.From Arcam advertising materialTECHNICAL SPECIFICATIONS:Reference quality 2 channel pre amplfierCompletely DC coupled for highest level of signal integrityBuffered balanced and unbalanced audio outputs (for driving longer cables)Single stage phono pre amp for MM/MC cartridgesLarge core low flux density toroid-based power supplyUpgrade path for multi-channel audioFront panel display and menu-driven user interfaceContactless electronic control of input switching of volume levelsAcousteel critically damped chassis for reduced microphony