Introducing Concert Fidelity’s new Line stage Pre-amplifier, an all tube, 6db gain via a handmade attenuator volume control by ELMA for absolute tonal purity. The new CLS-050 features 4 RCA input’s, one of which is switchable to XLR, and 2 sets of RCA outputs again switchable to a single pair of XLR outputs. In this new design, special attention was paid to using a bespoke output transformer, which for many years could not be produced successfully, until now realising Masataka Tsuda’s desire to build an extremely fine audio pre amplifier using 6V6 type tube for the gain section. Consequently, this pre amplifier can drive up to a 10m RCA interconnect to the power amplifier, with minimal loss. Internal rectification is by a 5AR4.

A headphone amp is included on the new CLS-050, furthering it’s flexibility of use. We have the new CLS 050 in our reference system and can only say it is true to Masataka’s ideals of just allowing the music through, most definitely as intended.. Just fantastic..

-Specification-
Inputs: INPUT 1-3 Line Level Inputs (RCA), INPUT 4 Line Level Input (RCA, XLR swithed)
Input Impedance: 100kohm (RCA single-ended), 50Kohm (XLR balanced)
Pre Outputs: Balanced (XLR) x 1, Single-ended (RCA) x 2
Headphone Outputs: SE (1/4″ TRS) or BAL (XLR-4P)
Tube Complement: 6V6(MT8B)/6V6GT(T9)/CV511 x2 for Gain, 5AR4/GZ34 x1 for rectification.
Custom Order Option: 6V6G(ST14), 6SN7, 5692, WE310A, WE337A, 5U4/5R4, 274B. Please ask us if you have a good tube.
Gain: 6dB
Power Reqiremants: (100VAC / 50~60Hz), 110-120VAC / 60Hz, (220-230VAC / 50Hz), (240VAC / 50Hz)
Dimensions: 450mm (W) X 140mm (H) X 310mm (D)
Net Weight: 14Kg

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