SPL reveal Crescendo Duo V2

SPL Crescendo Duo V2 two-channel microphone preamp 120V high headroom

Sound Performance Lab (SPL) have released the Crescendo Duo V2, a new and updated version of their two-channel microphone preamp.

Due to the original design already being technically well-accomplished, the updates introduced in the new version are relatively minor: the stepped gain control values have been altered to offer a wider selection of options in the middle of the gain range, and the device is now housed in an improved enclosure which sports a stylish black finish.

One of the key features of the unit’s design is the use of ±60V power rails, which allows the Crescendo to offer significantly increased internal headroom when compared to more usual preamp designs. As a result, SPL say it is “almost impossible” to overdrive the preamp circuitry. To find out more about the design and its benefits, take a look at our review of the eight-channel Crescendo model in the May 2019 issue of SOS.

Each channel is equipped with switchable +48V phantom power, a polarity inversion switch, a switchable 6dB/octave 120Hz high-pass filter, and a VU-10 switch which applies a 10dB reduction to the value displayed by the channel’s VU meter, a useful feature when working with high signal levels. Gain adjustment is provided in 12 steps, with 18, 22, 26, 30, 34, 38, 44, 50, 56, 63, and 70dB options available. A switchable Output control offers an additional ±10dB level control, and a Pad switch lowers the channel’s input sensitivity by 20dB, allowing the device to comfortably accept line-level signals if required.

All of the device’s I/O is provided by XLR connectors located on the rear panel. In addition to the expected microphone input and line-level output, both channels helpfully offer an additional parallel output, allowing users to route their signal to two different destinations without the need for any external splitters. There is also a ground lift switch, and power is delivered to the unit’s internal PSU via a standard IEC mains inlet.

Pricing & Availability

The Crescendo Duo V2 is available now, priced at $1999.