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    • F-05 Integrated Amplifier
      • F-05 Integrated Amplifier
      • F-05 Integrated Amplifier


      Esoteric F-05 Integrated Amplifier


        In stock (0) - 10 - 20 days Available in store: Check availability

        In Store Only! Esoteric's Master Sound Works is an audio product concept that recreates all of the music information in original master recordings with the most state-of-the-art technology available today.

        Product description

        Audio Expression, Symphonic Beauty, Artistic Passion, The Concert Hall's Spatial Feel, The Excitement of the Audience. 

                                                                  A Fully Balanced Preamplifier





        One result of the lavish attention given to the development of the F Series is the preamplifier's fully balanced configuration, which derives from our highly esteemed C Series preamplifier models. Impervious to noise, it delivers pure and powerful signal amplification at ultra-low impedance.

                                                               Dual Monaural by Design

        The one design feature of these amplifiers that most clearly reflects Grandioso thinking is their dual monaural configuration, which maintains complete left and right channel independence through all stages, from preamplifier to the power amplifier's final stage. As Esoteric integrated amplifiers, the major investments made in circuit construction expertise and materials developed over the years yield excellent channel separation and a measure of sound quality that transcends the class.


        Playing a significant role in the F Series' balanced dual monaural configuration is the proprietary Quad Volume Control System (QVCS), which incorporates a total of four precision switched resistor ladder networks operating in unison to electronically and independently control the left and right channels and their positive and negative phases. This system helps maintain superb audio clarity, excellent channel separation and highly accurate phase characteristics. Further, by eliminating all volume control wiring on the audio board, the resulting shorter signal path minimizes deterioration of sound quality while realizing exceptionally low distortion.
        * QVCS: Quad Volume Control System

                                                          Ultra-Low-Noise Logic Control

        As a countermeasure against noise, all control lines have been electronically separated from the main body of the preamplifier with the use of isolator elements integrated into the front panel.

                                                High-Precision Ball Bearing Control Knobs

        F-05 Knobs

        Employing the same high-precision bearing mechanisms used in our Grandioso components, the F Series' volume control knobs and selector switches provide exceptionally smooth operation with an analog feel free of any mechanical play. Sparing no cost, all panel knobs are also custom-machined from solid aluminum.

                                                       Dual Mono Phono-Stage 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.

                                                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 middle band can also be utilized as a loudness preset when set to the minus side and used in conjunction with the Tone Bypass switch.

             Large-Capacity Custom Power Transformer - The Nucleus of the Finest Power Amplifiers

        F-05 Power Supply

        The power supplies of the F Series feature large-core 940VA custom EI power transformers and 40,000µF block capacitors for each channel in a dual monaural configuration. Large-gauge cable is used in all connections to help minimize impedance. As in our separate power amplifiers, this outstanding power section achieves a theoretically linear power output ranging from 120W at an 8Ω load to 240W at 4Ω for faithful reproduction of every musical dynamic.

                                               Low Impedance for Enhanced Drive Capability

        Utilizing eight 1mm-thick bus bars formed of high-purity OFC, the speaker output section employs MOSFET switching with no mechanical contacts. Coils have also been eliminated from the output stage to minimize impedance and enhance drive capability.

                  Large Bipolar LAPT Transistors Deliver 34 Amperes of Instantaneous Peak Power

        Featured in Grandioso models up to and including the M1, large bipolar LAPT* transistors deliver an outstanding continuous current capacity of 17A, and 34A of instantaneous peak power. Their superior high frequency characteristics also play a critical role in the accurate reproduction of the most delicate tones.

                    3-Stage Darlington Circuit with 3 Parallel Push-Pull Configuration + LIDSC

        Derived from our flagship Grandioso line, the F Series' amplifier modules feature a three-stage Darlington configuration that utilizes three parallel push-pull sections to faithfully bring out the superb high-frequency characteristics of their LAPT transistors. Proprietary LIDSC* circuitry reduces the drive section's second stage to final stage output impedance, achieving loudspeaker drive capability nearly equal to that of our separate amplifiers. NFB has also been minimized to realize a more natural sound quality brimming with life.

                                                      3D Optimized Chassis Construction

        F-05 Skeleton

        The F-Series' 3D Optimized Chassis features robust construction that gives each circuit block its own dedicated compartment. Interference between circuits is effectively minimized while achieving the shortest possible cable routing. Chassis exteriors are formed of thick aluminum panels manufactured without compromise following the same design philosophy imbued in Esoteric's separate amplifiers. As a result, their heavy-duty construction tips the scales at a total weight of 32kg, exceptional among integrated models. The machined steel insulators support the F-05 at four points in order to minimize the negative effects of vibration.

        Esoteric F-05 Integrated Amplifier User's Manual


        Speaker Output


        Rated Output Power

        120W + 120W (8Ω)
        240W + 240W (4Ω)

        Minimum Compatible Impedance

        Damping Factor


        Speaker Terminals

        Screw type × 2 sets (L/R)

        Analog Audio Inputs


        XLR (LINE)

        2 pairs

        Input Impedance


        RCA (LINE)

        4 pairs

        Input Impedance


        RCA (PHONO)

        1 pair

        Input Impedance






        XLR (Pre-in)

        1 pair

        Input Impedance


        RCA (Pre-in)

        1 pair

        Input Impedance


        Analog Audio Outputs


        XLR (Pre-out)

        1 pair

        Output Impedance


        Pre-out S/N Ratio


        XLR, RCA


        Phono MC In

        75dB (1V output)

        Phono MM In

        93dB (1V output)

        RCA (Pre-out)

        1 pair

        Output Impedance


        Pre-out S/N Ratio


        XLR, RCA In

        109dB (1V output)

        Phono MC In

        75dB (1V output)



        Power Supply



        AC 230V, 50Hz


        AC 120V, 60Hz


        AC 220V, 60Hz

        Power Consumption


        AC 230V, 50Hz Version

        380W (no signal: 68W)

        AC 120V, 60Hz Version

        320W (no signal: 68W)

        External dimensions (W×H×D)

        445 × 191 × 468mm
        17-⅝" × 7-⅝" × 18-½" (including protrusions)


        70-⅝ lb

        Included Accessories

        Power cord × 1
        Remote cotrol (RC-1301) × 1
        AAA batteries × 2
        Felt pads × 4
        Owner's manual × 1
        Warranty card × 1





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