Esoteric F-01 - Integrated Amplifier

Main features
[Preamplifier section]
A fully balanced dual mono preamplifier in the direct line of the Grandioso C1X
"Ultra Fidelity Attenuator System", a stepped attenuator circuit developed by Esoteric
Volume can be adjusted in 0.1 dB/1,120* increments with our proprietary "UFA-1792" attenuator module *Preamp gain setting: at +12 dB
3 inputs of "ES-Link Analog", a unique and proprietary power transmission system
Two headphone outputs (4-pin XLR balanced / 6.3mm unbalanced) with built-in fully balanced dual mono headphone amplifier
Dual mono phonostage preamplifier (RCA x 1, MM/MC)
3-band balanced tone control, independently adjustable for each input source
Pre-out ES-Link Analog (x1) /XLR (x1) for connecting the S-05 as an external power amplifier
Dedicated DC power connector for connecting the PS-01F external power supply dedicated to the built-in preamplifier
The preamplifier gain can be adjusted in 4 steps (0/+6/+12/+18 dB) to match the connected power amplifier
[Amplifier Section]
Simple and direct circuit design concept based on Grandioso S1X
Class A 30WPC/8Ω
Excellent power linearity and drive power (60 WPC/4Ω)
All stages of the power rectification and smoothing circuit are configured with a double monophonic design.
Powerful bipolar transistor with 3 parallel push-pull configuration
Huge 940VA EI core power transformer
Custom channel-independent Grandioso grade block capacitors (10,000 μF x 4/ch)
Custom wave-shaped heat sinks to reduce peak resonance
[Other Features]
Independently adjustable input gains (±18 dB; 0.1 dB)
L/R channel balance (0.1dB)
AV through output (bypass volume) ensures seamless coexistence with AV systems
The aluminum-bodied remote control (RC-1339) can also be used to operate Esoteric's SACD players and network players.
The displayed source device names can be programmed
Mute, dim and auto-off display functions
Control functions (RS-232C, trigger input/output)