SPL Crescendo duo v2 Two-Channel Microphone Preamplifier

SGD 2,795.00

*Special Order


“Using the Crescendo immediately gives me the impression that I’ve just unlocked some new and previously hidden level of fidelity across my whole mic collection.” – Tape Op


“The Crescendo duo is a microphone preamp of the absolute master class. Anyone who is making acoustic recordings and wants to capture every mic detail without any noise will find this top preamp to be the perfect partner.” – Professional Audio


Dual-Channel Microphone Preamplifier with 120V technology

Crescendo duo v2 combines the precise sound that German Rundfunk-Technik is famous for with the innovative SPL 120V technology. The internal operating voltage of 120 volts allows Crescendo microphone preamplifiers to break completely new ground. This results in microphone preamps that sound detail-rich, vivid and equally honest. Crescendo duo v2 lets microphones shine in a whole new light – because they have never been amplified like this before.


The Undistortable

Thanks to the SPL 120V technology, it is almost impossible to overdrive this microphone preamplifier. Crescendo duo v2 is a dual-channel microphone preamplifier with 120V technology. Both channels feature the same range of functions. Besides phantom power (48 V) for condenser microphones, polarity reversal, a high-pass filter and a PAD switch, they provide the possibility to adjust the VU meter to display very high levels – so they leave nothing to be desired. The gain can be adjusted comfortably and precisely via a 12-step switch. With the switchable output control, the output level of the Crescendo duo v2 can be perfectly adapted to following AD converters. Two outputs per channel allow the signal to be sent to two different devices in parallel. In addition to the extensive feature set and the outstanding technical characteristics, Crescendo duo v2 convinces with a sonic authenticity that is second to none.


The 120V technology

The 120V technology is SPL’s reference technology. The 120V technology is unique in the world. It operates at a DC voltage of 120 volts. This is four times that of IC-based semiconductor op-amps.

The highest possible audio quality requires the highest possible audio operating voltage.

The 120V technology works with +/-60 V. To be able to handle such a high voltage, SPL has developed special proprietary operational amplifiers that can operate with a DC voltage of +/-60 V: the SPL 120V SUPRA operational amplifiers. This high voltage would destroy conventional components and operational amplifiers.The 120V technology achieves exceptional technical specifications and sonic benefits. Technically, in terms of dynamic range, signal-to-noise ratio and headroom. Sonically, in terms of richness of detail and an absolutely relaxed listening experience. By the way, the “120V” in the name of the technology has nothing to do with the local mains voltage from the mains power socket. This is about the operating voltage inside the device with which the audio signals are processed. The mains voltage from the mains power socket is transformed to the required secondary voltage in the device’s internal linear power supply with toroidal transformer. Rectifiers convert this AC voltage into DC voltage required in the audio device.

The idea for SPL 120V technology and the SUPRA operational amplifier based on this technology were developed in the 1990s by SPL founder and chief developer Wolfgang Neumann. With the goal of building the best mastering console ever, this basic technological philosophy then took shape for the first time – thus the SPL MMC1 Mastering Console for Galaxy Studios saw the light of day in 2000. The outstanding sonic and technical features quickly got around in the scene – so further orders were not long in coming. Besides the MMC 1, another legendary product with 120V technology was created with the PQ, the “King of Parametric Equalizers”. Since that time, 120V technology has been the foundation for all SPL premium products.



  • Improves upon its predecessor with a cosmetic facelift, improved housing, and more steps of amplification on the Mic Gain knobs
  • 120V technology and SUPRA op-amps deliver incredibly high headroom
  • Matched transistors and resistors cut down on harmonic distortion
  • -10 reduction switch makes it easy to display the dynamics of high levels
  • Discrete output stage op-amps are capable of driving long cable paths without problems
  • Active servo circuits avoid the use of coupling capacitors and their inherent drawbacks
  • 2 parallel XLR outputs per channel
  • Gain range: 18-70dB (-2dB to 50dB with 20dB Pad engaged)


* A “Special Order” is a product that we normally do not keep in stock. We order it from the manufacturer as soon as you order from us. We are the exclusive distributor for SPL, so we can get your special order to you fast, in about 1-2 weeks. Remember that special orders are non-cancelable, so make sure the item you are ordering is correct. Call us at +65 63388657 if you need assistance.

*Delays may be expected in the event of high order volumes or unforeseen circumstances.

Contact Us


Tel: +65 6338 8657

Email: sales@sinamex.com


Tel: +60 3 7954 0316

Email: smx@sinamex.com

Myanmar (Burma)

Tel: 09 7997 36933, 09 2562 61519, 09 4430 47478

Email: sinamex.myanmar@gmail.com

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