ESOTERIC F-07 Integrated Amplifier

This integrated amplifier inherits various technologies from the flagship model "Grandioso" series, including analog amplification circuits. It adopts a fully balanced preamplifier that realizes high noise resistance and low impedance, enabling pure signal amplification. It adopts a dual mono configuration with independent L/R for all stages from the preamplifier to the final stage of the power amplifier. The amplifier circuit adopts a 2-parallel push-pull 3-stage Darlington configuration inherited from Grandioso. It also adopts a unique LIDSC circuit that lowers the output impedance from the second stage of the drive stage to the final stage, further improving the speaker driving ability. The power supply section adopts a large custom EI power transformer of 633VA. The block capacitors are also in a dual mono configuration of 10,000μF x 4 per channel. The wiring is connected with a very thick cable with bolts, thoroughly reducing impedance. The volume control uses the unique "ESOTERIC-QVCS (Quad Volume Control System)" method, which electronically controls a total of four ladder resistor switching circuits, each independent for L/R and +/-, and achieves both a balanced configuration and dual mono. It also has a dual mono phono equalizer (MM/MC) with independent L/R power supplies and circuits, and a headphone amplifier that can drive high impedance headphones. The case has a robust internal structure with each circuit block in its own compartment and arranged in three dimensions. It uses a 3D optimized chassis structure that suppresses mutual interference between each circuit and enables wiring via the shortest route. It has one slot for adding an optional board, and can add the DAC board "OP-DAC1" that supports 11.2MHz DSD and 384kHz/32bit PCM. ■Output: 100W+100W (8Ω) 170W+170W (4Ω)

■Total harmonic distortion: (1kHz, 8Ω) 0.008% (100W)

■Frequency response: (1W output +0/-3.0dB) 10Hz to 100kHz

■S/N ratio (IHF-A): 110dB

■Damping factor: 370

■Minimum impedance: 4Ω

■Speaker output terminals: Screw type x 2 systems (L/R)

■Input impedance: XLR, RCA 10kΩ /PHONO (MM) 47kΩ PHONO (MC) 100Ω

■External preamp input: 47kΩ

■Output impedance: RCA 100Ω

■Preamp output

■S/N ratio (at 1V output) XLR, RCA input: 109dB

■PHONO (MM) input: 93dB /PHONO (MC) input: 75dB

■Gain: Preamp section: 24.5dB (at maximum volume)

■Power amplifier section: 29dB

■Tone control Bass graph: ±12dB (63Hz) / Treble graph: ±12dB (14kHz)

■Power supply: AC 100V, 50-60Hz

■Power consumption: 215W (Electrical Appliance and Material Safety Act) 42W (no signal)

Accessories: 1 power cord, 1 remote control (RC-1301), 4 felt sheets, 1 instruction manual

Size W (width): 445 mm H (height): 191 mm D (depth): 468 mm

Weight 27.2 kg