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Richly capturing the full warmth and texture of music, all of the superb powers of expression and audio performance for which the Grandioso line has won renown are now condensed into an integrated form offering exceptional ease of use and broad appeal that more than compensates for its compact proportions.
Representing a new generation of integrated amplifiers, Esoteric’s new F Series has been thoroughly invested with proven results gained in the development of our flagship Grandioso line of separate amplifiers. With the goal of capturing all the inherent warmth and texture of music, not only were the outstanding expressive powers of the Grandioso line pursued, the utmost limits of audio performance were also concentrated into an integrated configuration that offers excellent usability combined with an attractiveness that more than compensates for the limitations of their size. Basic and Complete. With sights set on creating a unique presence in the category, the Esoteric F Series is born.
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.
Most clearly reflecting Grandioso thinking, the F-07's dual monaural configuration maintains complete left and right channel independence through all stages, from the preamplifier to the power amplifier's final stage. Outstanding circuit construction also yields excellent channel separation and sound quality to transcend the class.
Playing a significant role in the F-07's balanced dual monaural configuration is Esoteric's proprietary Quad Volume Control System (QVCS), which incorporates a total of four precision switched resistor ladder networks operating in unison to independently and electronically 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.
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.
Employing the same high-precision bearing mechanisms used in our Grandioso components, the F-07's volume control knob and selector switches offer exceptionally smooth operation with an analog feel free of mechanical play. Sparing no cost, all panel knobs have also been custom-machined from solid aluminum.
The dual mono phonostage preamp (MM/MC) features independent left and right channel power sources and independent circuits.
The powerful headphone amp provides abundant output to effectively drive even difficult to power high-end high-impedance headphones.
Consisting of four circuits (L/R, –/+) for each band, the system's balanced dual monaural configuration enables the user to adjust tone settings free of any concerns about deterioration of sound quality. Shifting the variable bands more toward the high and low frequency ranges (14kHz/63Hz) permits fine tone adjustment without adversely affecting the original source signal. Fully electronic control also permits fine adjustment of up to ±12dB in 0.5dB steps.
With its balanced front stage, the power amplification section's clean amplification and low impedance further enhance the dynamic range.
The power supply features a large-core 633VA custom EI power transformer and 40,000µF block capacitors for each channel in its dual monaural configuration. Large-gauge cable used in all power connections helps minimize impedance to further ensure that every musical dynamic is faithfully reproduced by this outstanding power section.
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.
|Rated Output||100W + 100W (8Ω); 170W + 170W (4Ω)|
|Total Harmonic Distortion (1kHz, 8Ω)||0.008% (100W)|
|Frequency Response (+0/-3.0 dB at 1W output)||10Hz - 100kHz|
|S/N Ratio (IHF-A)||110dB|
|Minimum Compatible Impedance||4Ω|
|Speaker Output Connectors||2 pairs (L/R) (screw type)|
|EXT. PRE IN||47kΩ|
|XLR, RCA Input||109dB|
|PHONO (MM) Input||93dB|
|PHONO (MC) Input||75dB|
|Preamplifier||24.5dB (when VOLUME at maximum)|
|BASS Tone Curve||±12dB (63Hz)|
|TREBLE Tone Curve||±12dB (14kHz)|
|Power supply / Power consumption||AC 230V 50Hz; AC 120V 60Hz; AC 220V 60Hz|
|External Dimensions (W x H x D)||445 x 191 x 468mm (17 5/8″ x 7 5/8″ x 18 1/2″) (including protrusions)|
|Weight||27.2kg (60 lb)|
|Remote Control Unit (RC-1301)||1|
|Product Weight (lbs.)||60|