SPL / Crescendo Duo

A two-channel microphone preamplifier featuring SPL's 120V technology and fully balanced signal flow.

*This product requires an outlet capable of supplying AC115V 50/60Hz. Please note that it cannot be used properly with a normal household outlet (AC 100V) without boosting. The input stage uses 10 matched pairs of PNP transistors (differential input transistors) to achieve extremely low noise and high common mode rejection. Each input stage uses six 5th generation 120V SUPRA op amps. The transformerless input/output stage design ensures extremely linear amplification. The output stage operates as a current amplifier, providing Class-A operation with a quiescent current of more than 6mA. ■Main features ・Uses SPL 120V technology ・Fully balanced signal flow ・Uses 10 pairs of matched PNP transistors (differential input transistors) ・48V phantom, phase switching, pad, VU meter ■Specifications ・Input impedance: 10 kOhm ・Output impedance: 75 Ohm ・Frequency range (-3dB): 20 Hz - 100 kHz ・THD + N 10 Hz - 22 kHz, 32 dB Gain: 0.002% 10 Hz - 22 kHz, 63 dB Gain: 0.001% ・Noise (A-weighted) 150 Ohm, 32dB Gain -94 dB 150 Ohm, 63dB Gain -67.5 dB ・CMRR: 88dBu/1kHz ・E.I.N: 150 Ohm: -130.5 dBu

・Dimensions & Weight
W x H x D: 482 x 88 x 300 mm 6.1kg