A phono equalizer amplifier employing a non-feedback CR type amplification circuit using vacuum tubes in all stages. The vacuum tubes used are ECC83 x 4, ECC82 x 2, and EZ81 x 1. Equipped with 4 independent super permalloy MC step-up transformers and 4 output transformers on each of the left and right and low/high. The vacuum tube amplifier circuit uses a rectifier tube (EZ81) and choke coil to supply a stable voltage. Equipped with a needle-type analog meter with sensitivity switch to monitor output level. We used OFC for the internal wiring, and included plenty of original custom parts with an emphasis on sound quality. A steel plate chassis is used for the housing. Equipped with highly rigid insulator legs made of machined aluminum. The power cable is "JPA-10000" with OFC extra-thick wire and non-twist structure.

■Circuit method: SRPP, final stage cathode follower, non-feedback CR type equalizer (RIAA)

■Vacuum tubes used: 4 ECC83, 2 ECC82, 1 EZ81

■Input sensitivity (1kHz, gain switching 36dB): MM 4mV, MC high 0.44mV, MC low 0.18mV

■Input impedance: MM 30kΩ to 100kΩ (variable), MC high 40Ω, MC low 2.5Ω

■Rated output/output impedance: 250mV/850Ω

■Gain (at 1kHz, gain switching 36dB): MM 36dB, MC high 55dB, MC low 63dB

■Maximum allowable input (1kHz): MM 300mV, MC high 34mV, MC low 13mV ■RIAA deviation: MM / MC high / MC low 20Hz - 20kHz (±0.3dB)

■Total harmonic distortion rate: MM 0.07%, MC high 0.18%, MC low 0.3%

■S/N ratio MM 76dB, MC high 75dB, MC low 74dB

■Separation: 65dB (10kHz)

■Input: Unbalanced 3 systems

■Output: 2 unbalanced systems, 1 balanced system

■Attached equipment: [Front panel] Power switch, input selector, cartridge selector, input capacitor selector, input impedance control, gain selector switch, output level meter, meter switch, meter sensitivity selector switch, output mode selector switch, Balanced phase inversion switch, articulator switch, monaural mode switch, low cut switch, high cut switch [Rear panel] Input/output terminal, signal ground terminal (independent for each input terminal), AC inlet

■Power consumption: 47W (Electrical Appliance and Material Safety Law).

Accessories: Instruction manual, power cable, original box

Size W (width): 440 mmH (height): 92 mmD (depth): 397 mm

Weight 12.5 kg