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Japan Esoteric F-03A Pure Class A Integrated Power Amplifier 30th Anniversary Edition Brand New Licensed Warranty
![F03A_01.jpg](https://img.alicdn.com/imgextra/i4/369236808/O1CN0120A6rxGL20AdunN_!!369236808.jpg)
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F-03A inherits the technical essence of its own highest-end Grandioso series. For example, the internal fully-balanced front-end architecture is derived from Grandioso C1, coupled with pure Class A power amplifiers. The whole machine adopts a dual mono design, from the input of the front stage to the final stage of the power output of the rear stage. The left and right channels are completely independent to reduce the problem of crosstalk interference. Equipped with 940VA large EI transformer inside, 40,000 per channelμF(10,000μF×4)The filter capacitor. Each channel uses 3 pairs of Sanken LAPT power crystals in parallel for push-pull output. The same crystals can also be seen on the flagship S1 and M1, which can provide 17 amperes of current supply, with a maximum peak value of 34 amperes.
Volume control part, F-03A uses exclusive QVCS(Quad Volume Control System)The volume control system is also the technology from the flagship C1 preamplifier, which uses 4 sets of resistor arrays to control the + and-music signals of the left and right channels respectively. In terms of output/input terminals, F-03A has 4 groups of RCA inputs, 2 groups of XLR inputs, 1 group of XLR Pre in, and 1 group of RCA terminals to support MM/MC phono input. The output terminal has 1 set of XLR and RCA pre-output, and 1 set of 6.3mm headphone output on the front panel, with independent headphone output line.
Equipment specifications
Esoteric F-03A
Type: Pure Class A Comprehensive Amplifier
Output power: 30 watts(@8 ohm), 60 watts(@4ohm)
Total harmonic distortion: 0.006%
Frequency response: 10Hz~100kHz(1W, +0/-3.0dB)
Signal to noise ratio: 104dB
Damping factor: 370
Pre-stage gain: 24.5dB(Maximum volume)
Post-stage gain: 29dB
Size: 445x191x468mm(WxHxD)
Weight: 32 kg catty