FX-AUDIO- FX-04J+ OPA627 x 3 NFJ Edition 32bit high-end mobile audio DAC ES9018K2M USB bus-powered high-resolution DAC

Transition to "made-to-order model" from December 2019

This product was sold as a special limited edition model, but in response to numerous requests for resale, it will be re-released as a "made-to-order model" from December 2019.

Please note that some parts will be changed due to the change in lot, but there will be no change in performance or sound quality.

A major renewal to the new lot will begin on sale on October 4, 2022

The board circuit has been redesigned, and the USB receiver IC has been changed from "VT1728A" to the new generation IC BRAVO "SA9023".

The basic performance has been improved by changing to a new and well-established IC with a new design and by updating the circuit.

・Changed to new generation IC "SA9023" ・Renewed main board

FX-AUDIO- FX-04J+ OPA627 x 3 NFJ Edition This product is a small D/A converter with USB connection and bus power that supports high-resolution sound sources (24bit/96kHz) and uses VIA's VT1728A as the digital audio control IC and ESS Technology's ES9018K2M as the DAC IC.

Based on the popular "FX-04J" with its high sound quality and affordable price, the op-amps have been thoroughly reviewed to achieve ideal operation, and the sound quality has been further improved by reselecting the op-amps used.

This special limited edition model uses three main op-amps, the TL072, used in the base model FX-04J+, two in the LPF circuit section and one in the differential-single-ended conversion section, all replaced with Burr-Brown OPA627AU (2-circuit DIP version), bringing out the full potential of the ES9018K2M DAC. The sound quality exceeds the standards of USB bus-powered operation, providing a sense of realism as if the music was being played right in front of you, and the ease of portability. [Product Specifications]

Brand: FX-AUDIO-

Model number: FX-04J+ NFJ Edition

Color: Black

Product warranty period: 6 months from date of purchase

Digital input: USB Type B terminal USB 1.1/2.0 compatible USB Audio Class 1.0

Analog output: Stereo RCA terminal

Supported formats: PCM up to 24bit 96kHz

DAC IC: ESS Technology ES9018K2M (DNR: +125dB / THD+N: -120dB)

USB receiver IC: Savitech BRAVO SA9023 (USB-DDC)

Supported OS: Windows 10/ 8 (8.1) & 7/ Vista / XP / 2000/ MacOS X / 9.1 or later

Accessories: Instruction manual, "NFJ Edition" logo sticker

Size: Width 51mm x Depth 78mm x Height 21mm (excluding protrusions)

Weight: 80g

Made to order model NFJ Special Edition equipped with 3 OPA627s OPA627 is used for all left and right independent LPF circuits and differential conversion circuits! Further tuning of the power supply circuit achieves ideal operation Uses ESS ES9018K2M, a 32-bit high-end mobile audio DAC Component configuration ideal for audio