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Rega Cursa 3 Line Preamp
The Rega Cursa 3 is a high performance audio preamplifier using the improved "type 3" Rega Alpha-Encoder control system comprising of high quality lossless relays, and a digitally controlled, analogue switched resistor network volume control. It is housed in the Rega custom-built extruded aluminum chassis. Rega has further improved the technical and sonic performance by using a dual FET differential input stage within the discrete Op-Amp circuit. Evox polypropylene capacitors have been used in the signal path. Versatility has been heightened with the addition of a second tape input.
The Cursa 3 is a remote controlled preamplifier with full flexibility within the range. There are three phono input plug-in card options; MM, MC and line-level. There are two power amplifier outputs, which can be set to any one of the three different output levels. This enables the Cursa to drive most types of power amplifiers with a sensitivity of 0.2V to 1.7V (please note the 1.7V output level requires an input sensitivity of 0.3V).
The volume level is controlled via a microprocessor, which in turn takes its information from the volume digital encoder on the front panel or remote control handset. The volume control has a resolution of 1dB per step, giving a total range of 80 steps over the available gain or volume range of 80dB. There is a calibrated LED display comprising of 20 LEDs that indicates the gain level or relative position of the volume control. This is calibrated in 4dB steps across the total gain or volume range. The left and right channels are matched and balanced within 0.2dB, ensuring a centrally placed soundstage no matter the volume and gain level.
The stepped resistive networks of the volume control are placed in the feedback and input circuits of the FET input discrete line amplifier, thereby optimizing the gain of the line amplifier for the best signal to noise ratio. Also, the stepped resistive network provides the amplifier input with constant input impedance, providing the source component (CD, tuner, tape, etc.) with a constant impedance load and eliminating the possible changes in sound quality with different volume positions.
Rega Cursa 3 Features and Specifications
Improved version 3 Rega Alpha-Encoder control system
Digital control of the analogue switched resistor volume control and input relays
Calibrated LED electronic volume display
High performance switched resistor volume control
High performance Evox polypropylene capacitors used in the signal path
Rega custom built extruded aluminum
Two tape inputs
Twin parallel output sockets
Discrete Operational Amplifier circuit topology
MM, MC and line options on phono input
Three different output levels of 0.2, 0.6 and 1.2V
Full flexibility within the range
Forms a pre-power system with the Maia and Exon power-amplifiers
High quality plated-through-hole printed circuit board
*MM and MC phono boards are available for $125. Please call to order.
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