Esoteric F-03A Integrated Audio Amplifier

ESOTERIC

MSRP: kr.107.240,00
kr.101.878,00
(You save kr.5.362,00 )
(16 reviews) Write a Review
SKU:
156669
UPC:
4907034220830
Availability:
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Shipping:
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Power output:
Class A 2x30W @8Ω (2x60W @4Ω)
Construction:
Discrete Dual Monaural, Balanced preamp, LAPT transistor Push-Pull
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Basic and complete
Launching brand new F-series

F-03A
esoteric-f-03a-integrated-amplifier-reviews.jpg
F-03A

Audio expression, symphonic beauty, artistic passion, the concert hall's spatial feel, the excitement of the audience. 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.

A Fully Balanced Preamplifier

F-03A

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.

ESOTERIC-QVCS

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-03A

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 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.

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

F-03A

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.

Power Amplifier Input Stage Features Balanced Configuration

F-03A

The power amplification section's front stage is balanced in line with the thinking behind our S Series separate amplifiers. Its low impedance and clean amplification further enhance the dynamic range.

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

F-03A

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 30W at an 8Ω load to 60W 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

F-03A

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.
* LAPT: Linear Amplified Power Transistor

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

F-03A

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.
* LIDSC: Low Impedance Drive Stage Coupling

3D Optimized Chassis Construction

F-03A

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. Our patented steel pinpoint feet* support the F-03A at four points in order to minimize the negative effects of vibration.

F-03AF-03A

Designed for System Upgrades

F-03A

The preamplifier and power amplifier sections of the F Series boast the same degree of refinement as Esoteric's separates, and can both be used as standalone devices, or even disabled if not in use. The PRE-out employs a powerful buffer amplifier, while XLR outputs achieve a highly effective fully balanced configuration. System upgrades can also be performed with no compromises in quality, and an optional board slot facilitates the installation of an optional board, such as OP-DAC1 D/A Converter Board or OP-ESLA1 ES-Link Analog Input Board.

F-03A

Other features

  • Organic EL display (Normal / Large font)..
  • Two speaker terminal systems (A / B / A+B)..
  • Independently adjustable input gains (±18dB; 0.5dB steps)..
  • L/R channel balance..
  • Individually selectable phase inversion for each source..
  • AV through output (volume bypass) ensures seamless coexistence with AV systems..
  • Preamp output jacks (XLR & RCA) can be switched between PRE Out and REC Out..
  • Aluminum body remote controller can also be used to operate Esoteric's SACD players..
  • Displayed source device names can be remotely programed.
  • Mute, dimmer and automatic display OFF functions.

Spec description

Speaker output  
Rated output 30W + 30W (8Ω)
60W + 60W (4Ω)
Minimum compatible impedance
Damping factor 370
Speaker terminals Screw type × 2 sets (L/R)
Analog audio inputs  
XLR (LINE) 2 pairs
Input impedance 10kΩ
RCA (LINE) 4 pairs
Input impedance 10kΩ
RCA (PHONO) 1 pair
Input impedance  
MC 100Ω
MM 47Ω
XLR (Pre-in) 1 pair
Input impedance 47Ω
RCA (Pre-in) 1 pair
Input impedance 47Ω
Analog audio outputs  
XLR (Pre-out) 1 pair
Output impedance 100Ω
Pre-out S/N ratio  
XLR, RCA IN 109dB (1V output)
PHONO MC IN 75dB (1V output)
PHONO MM IN 93dB (1V output)
RCA (Pre-out) 1 pair
Output impedance 100Ω
Pre-out S/N ratio  
XLR, RCA IN 109dB (1V output)
PHONO MC IN 75dB (1V output)
PHONO MM IN 93dB (1V output)
General  
Power supply  
  AC 230V, 50Hz
  AC 120V, 60Hz
  AC 220V, 60Hz
Power consumption  
AC 230V, 50Hz version 290W (no signal: 290W)
AC 120V, 60Hz version 290W (no signal: 215W)
External dimensions (W×H×D) 445 × 191 × 468mm
17-⅝" × 7-⅝" × 18-½" (including protrusions)
Weight 32kg / 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

 

Audio performance

Frequency 10Hz to 100kHz (0dB/–3dB, 1W output)
S/N ratio 104dB (IHF-A)
Total harmonic distortion 0.006% (30W)
Gain  
Preamplifier 24.5dB (when VOLUME at maximum)
Power amplifier 29dB
Tone controls  
Bass ±12dB (63Hz)
Middle ±12dB (630Hz)
Treble ±12dB (14kHz)

 

Tone control curves

F-03A

Bass

  F-03A

Middle

  F-03A

Treble

 

 

  • This product is available in two different power supply variations, as shown in the chart above. Make sure that the voltage shown 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.
  • Design and specification are subject to change without notice.
  • Weight and dimensions are approximate.

 

View product brochure.

Download english/french/spanish user manual.

Download german/italian user manual.

2 years

16 Reviews Hide Reviews Show Reviews

  • 5
    Esoteric F-03A Integrated Amplifier

    Posted by Robert Harley - The Absolute Sound 2018/12 on 10th Mar 2021

    From one perspective, the Esoteric F-03A is pricey—thirteen grand for a 30Wpc integrated amplifier is far from budget. Yet to realize the F-03A’s textural beauty, resolution, and liquidity in a powerful Class AB amplifier would push the cost into the stratosphere. The Esoteric delivers the sonic virtues of very expensive amplifiers on a smaller scale, and at a more moderate price. If you have loudspeakers of appropriate sensitivity and realistic expectations about how loudly the system will play, the Esoteric F-03A delivers an immersive musical experience that won’t leave you thinking about your next amplifier upgrade.

  • 5
    HiVi Winter Best Buy 2016

    Posted by Stereo Sound Publishing Inc. on 28th Oct 2020

    Integrated Amplifier category (over JPY400k)

  • 5
    Visual Grand Prix 2016 Summer

    Posted by Ongen Shuppan Publishing Co., Ltd on 28th Oct 2020

    Integrated Amplifier category (over JPY500k)

  • 5
    Visual Grand Prix 2017

    Posted by Ongen Shuppan Publishing Co., Ltd on 28th Oct 2020

    Integrated Amplifier category (JPY500k to 1000k)

  • 5
    Analog Grand Prix 2017

    Posted by Ongen Shuppan Publishing Co., Ltd on 28th Oct 2020

    Solid State Amplifier (with Phono Input) category

  • 5
    Best Buy Component 2017-2018

    Posted by Stereo Sound Publishing Inc. on 28th Oct 2020

    Integrated Amplifier category (over JPY500k)

  • 5
    Best Buy Component 2017-2018

    Posted by Stereo Sound Publishing Inc. on 28th Oct 2020

    Integrated Amplifier category (over JPY500k)

  • 5
    STEREO Best Buy Component 2016-2017

    Posted by Stereo Sound Publishing Inc. on 28th Oct 2020

    Integrated Amplifier category (over JPY500k) 1st. place

  • 5
    STEREO Best Buy Component 2016

    Posted by Ongaku no Tomo Sha Corporation on 28th Oct 2020

    Integrated Amplifier category (over JPY700k) 1st. place

  • 5
    STEREO Best Buy Component 2017

    Posted by Ongaku no Tomo Sha Corporation on 28th Oct 2020

    Integrated Amplifier category (over JPY700k) 1st. place

  • 5
    Audio Excellence 2017

    Posted by Ongen Shuppan Publishing Co., Ltd on 28th Oct 2020

    Grand Special Price

  • 5
    Stereo, The Best Component of the Year 2016

    Posted by Ongaku no Tomo Sha Corporation on 28th Oct 2020

    Integrated Amplifier category 1st. place