Concert Fidelity

Resolution Series

CF-i300B Integrated Amplifier

The CF-i300B is an all-tube integrated amplifier featuring a pair of the 300B output tube driven by a pair of 6SJ7/6SJ7GT/5693. Rectification is handled by a 5AR4/GZ34. The directly heated triode amp outputs 9 watts/8ohm per channel. The circuit topology is extremely simple and signal paths are short.
The CF-i300B has four sets of single-ended inputs and one of them can be switched
to balanced (XLR). Users can select the speaker output impedance between 4 ohm and 8 ohm. As a bonus, it has a solid-state headphone amp which can drive either pair of a single-ended or balanced headphones.

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)
Speaker Outputs: 0-4ohm-8ohm
Headphone Outputs: SE(1/4″ TRS) or BAL(XLR-4P)
Tube Complement: 300B (2) for Output, 6SJ7/6SJ7GT/5693 (2) for Driver, 5AR4/GZ34 (1) for rectification
Others: Remote volume control *Option
Power Reqiremants: (100VAC / 50~60Hz), 110-120VAC / 60Hz, (220-230VAC / 50Hz), (240VAC / 50Hz)
Dimensions: 450mm (W) X 140mm (H) X 310mm (D)
Net Weight: 20Kg

The 300b architecture developed by Masataka Tsuda, founder and chief designer of Concert Fidelity, delivers a profound range and a rich transparent quality that will make you come back for more over and over again.

When connected together by Black Cat’s Graceline Audio “Setsuna” interconnects and speaker cables this combination is just absolutely wonderful. 


Mike Phalan

Gestalt HiFi

24 Sunlit Dr West

Santa Fe NM 87508

By Appointment