Spec Corporation RSQ-S1EX Real-Sound Phono Equalizer

Spec-Corp RSA RSQ-S1EX Phono Amplifier

The "TRUE RICHNESS OF MUSIC" to your ears

Our "Real-Sound" is produced in our RSQ-S1EX, a phono equalizer with an extremely simple circuit configuration. Our engineers have made full use of the superb capabilities of the latest high quality, ultra high bandwidth and low noise operational amps. The new designs bring you closer than ever before to the ideal amplifier.

In our minds the most important portion of the high gain amplifier circuitry like a phono EQ amplifier is the initial- input stage receiving the output voltage from the cartridge. Our RSQ-S1EX second stage consists of separate high performance operational amps which are configured to bring out the full potential of each type of the styli, both MC and MM cartridges.

An ultra low-noise, high-gain "bipolar-input operational amp" is used for MC cartridges with low-voltage, low-impedance outputs, while a high input impedance and high-performance audio circuitry "FET-input operational amp" is used for MM cartridges with high-voltage, high impedance outputs. This will let you enjoy the highly natural and vivid sound with each type of cartridges.

The "CR Equalizer" is SPEC's own method of allowing you the pursiut of "Real-Sound":- Faithful Reproduction of the Rich Information Contained in Analog Vinyl LPs.

Thanks to the latest ultra low-noise, high-gain operational amps, we could adopt "CR equalizer", it is constructed from exclusively passive devices and excellent phase linearity characteristics. Because of its simple circuit configuration, the sound character of each passive devices used in the CR equalizer determines the final sound quality of the phono equalizer.

REQ-S1EX employs two types of highest quality "oil filled capacitor" custom-made by Arizona Capacitors, Inc. USA, featuring different tonal character and "mica capacitors" with ultimate sound quality. They contribute to the highly transparent, information-rich sound that is the Spec RSQ-S1EX "Real-Sound" phono equalizer".

Being virtually free from conducted electrical noise and with excellent channel separation, Spec's " Phono EQ" amplifier unit with separate "Power Supply" case with totally independent L/R power supplies makes for a very convincing 'Real Sound'

A specialized power supply with newly-developed SiC (Silicon Carbide) Schottky diodes coupled with the blending of custom capacitors. Two type of high quality electrolytic capacitors, connecting in parallel, one custom "oil-filled capacitors" the other a superb quality "mica capacitors". This combination achieves a fine, flat but energetic sound across the entire frequency range.

Over riding the whole units is this power supply, a dedicated independent dual mono affair that brings out complete channel separation. In addition to the metal chassis-chassis, a solid laminated panel of European spruce from Austria is used for producing a natural and pleasant sound. Insulators made from pure real maple from Hokkaido in Japan moderates the vibrancy of the spruce base-chassis and cut off the vibration from out-side help providing a nice musicality.

You will rediscover your analogue LP with a new fascination with Spec's gaol of 'Ultimate High-Resolution Sound' for vinyl.

SPEC CORP RSQ-S1EX Specifications


  • Input
  • MC gain: 60dB
  • Input impedance switching 20 Ohms / 200 Ohms
  • MM gain: 40 db
  • Input load capacity switching: 0 pF / 100 pF
  • Output
  • Unbalanced RCA: 0.5 Vrms
  • Balanced XLR: 1.0 Vrms
  • RIAA deviation: 10 Hz - 50 kHz +/- 0.25 dB max.
  • Input conversion noise: 140 dBV (MC)
  • Size: 260 mm (width) x 84 mm (height) x 387 mm (depth)
  • Weight: 5kg
  • Power supply unit
  • 230 V AC, 50 Hz/60 Hz
  • Electrical consumption: 10 W
  • Size:260 mm (width) x 84 mm (height) x 380 mm (depth)
  • Weight: 6.0 kg
Spec-Corp RSA RSQ-S1EX Phono Amplifier Spec-Corp RSA RSQ-S1EX Phono Amplifier Spec-Corp RSA RSQ-S1EX Phono Amplifier Spec-Corp RSA RSQ-S1EX Phono Amplifier Spec-Corp RSA RSQ-S1EX Phono Amplifier Spec-Corp RSA RSQ-S1EX Phono Amplifier