Grandioso F1 Integrated Amplifier

    The Overview

    The flagship model of Esoteric integrated amplifers for the next dimension in sound

    Te Grandioso series is the best of the best, the supreme range of Esoteric products.
    Te Grandioso F1 takes its place at the pinnacle of this range as an integrated amplifer
    comprised of only the very best in luxurious materials expected of a fagship model.
    Since we take pride in in-house development and the fact that our products
    are made in Tokyo, we took the extra step to develop
    a unique next-generation silicon carbide MOSFET called
    the "ESOTERIC MODEL200" for the core of the power amplifer.
    But we did not stop there. Tis level of uncompromising perfection is found in all
    aspects of the Grandioso F1, including its technology, layout, and design.
    Tis enables it to truly provide outstanding power of expression so listeners can
    experience the rich texture and warmth of their favorite music.
    It also features a space factor not found in separated models.
    Te Grandioso F1 truly sings the virtues of modern amplifer technology.

The Features

Fully Balanced Preamplifier


 The Grandioso F1 is a fully balanced preamplifier that descends from the Grandioso C1. It is resilient to noise, and can amplify signals purely and powerfully with low impedance.

Dual Monaural Configuration

 A dual monaural configuration with separate left and right sides has been adopted for all stages; from the preamplifier stage to the final stage of the power amplifier. The inclusion of the largest amount of materials ever used in the circuits of an all-in-one Esoteric amplifier ensures both superior sound quality and channel separation.

"ES-LINK Analog" Method for High Quality Current Transmission

 In addition to regular line connections (XLR and RCA), the Grandioso F1 features the new "ES-LINK Analog" transmission method developed by Esoteric. This current transmission method utilizes the high performance of the HCLD buffer circuit and its enhanced ability to supply power at high-speed to transmit a pure and strong signal with minimal interference from the impedance of the signal route. This is the ideal method for analog audio transmission as it fully maximizes the system's potential when connected to a compatible device.*
*Included in the Grandioso K1 as of September 2016. A standard balance cable (with an XLR terminal) is used for connections, but the "ES-LINK Analog" method can only be used with compatible devices since it is a proprietary transmission method.

3-Band Tone Control (Treble/Middle/Bass)


Commitment to achieving all the quality associated with high-end components results in a balanced dual monaural configuration consisting of four circuits (L/R, -/+) for each band. This system enables users to adjust tone settings free of any concerns about sound quality deterioration. Shifting the variable band more than usual toward the high and low frequency ranges (14kHz/63Hz) permits fine adjustment of bass and treble without adversely affecting the original source signal. Fully electronic control also permits fine adjustment of up to ±12dB in 0.5dB steps.


 The F1's Esoteric-QVCS* volume control employs four precision switched resistor ladder networks, which change in unison as the volume knob is rotated. This arrangement allows the signal paths for the left and right channels and their positive and negative phases to be kept totally independent and as short as possible. Consequently the sound has superb clarity, excellent channel separation and highly accurate phase characteristics. The elimination of audio board wiring to the volume control further contributes to a reduced signal path, while preventing degradation of sound quality and helping to maintain the low distortion one would expect of a reference model.
*QVCS = Quad Volume Control System

Ultra Low Noise Logic Controls

 All control systems in the Grandioso F1 are electrically separated from the main preamplifier using isolator chipsets and contained in the front panel to effectively minimize noise.

High Precision Ball Bearing Control Knobs


 Employing the same high-precision bearing system used in our VRDS transport mechanisms, the F1's volume control knob and selector switch provide exceptionally smooth operation with an analog feel free of any mechanical play. Sparing no cost, the front panel and all panel knobs are custom-machined from solid aluminum.

Dual Mono Phonostage Preamp

The dual mono phonostage preamp (MM/MC) features independent left and right channel power sources and independent circuits.

High-Quality Headphone Amplifier

The powerful headphone amp provides abundant output to effectively drive even difficult to power high-end high-impedance headphones.

The Specs

Speaker output Output 30W + 30W (8Ω)
60W + 60W (4Ω)
Total harmonic distortion
(1kHz, 8Ω)
0.009% (30W)
Frequency response
(+0/-3.0 dB at 1W output)
10Hz - 150kHz
S/N ratio (at 30W/8Ω, JEITA) ES-LINK Analog, XLR, RCA inputs 103dB
PHONO (MM) input 101dB
PHONO (MC) input 82dB
Damping factor 100
Minimum compatible impedance
Speaker output connectors 1 pair (L/R, screw type)
Headphone output Output (32Ω, 10% distortion) 1000mW
Headphone jack x 1
Inputs Terminals (L/R) ES-LINK Analog x 1
XLR x 2
RCA x 3
Input impedance ES-LINK Analog - (current input)
Gain Preamplifier 24.5dB (when VOLUME at maximum)
Power amplifier 35dB
Tone controls BASS  tone curve ±12dB (63Hz)
MIDDLE  tone curve ±12dB (630Hz)
TREBLE  tone curve ±12dB (14kHz)
General Power supply AC 230V 50Hz
AC 120V 60Hz
AC 220V 60Hz
External dimensions
(W x H x D)
445 x 191 x 470mm
(17 5/8″ x 7 5/8″ x 18 5/8″)
(including protrusions)
Weight 30kg (66 1/4 lb)
Included accessories Power cord x 1
Remote control (RC-1315) x 1
Batteries (AAA) x 2
Felt pads x 4
Owner's manual x 1
Warranty card x 1
- This product is available in two different power supply variations as shown in the chart above.
Make sure that the voltageshown on the rear panel matches the AC line voltage in your area.
- The shape of the AC inlet and plug of the supplied power cord depends on the voltage rating and destination country.
- Specifications and appearance are subject to change without notice.
- Weight and dimensions are approximate.