FX-AUDIO- FX-04J+ 32-bit High-End Mobile Audio DAC with ES9018K2M, USB Bus Powered, High-Resolution Audio Compatible

A major upgrade to the new lot will begin on sale September 27, 2022. The board circuitry has been redesigned, and the USB receiver IC has been changed from the "VT1728A" to the new-generation BRAVO "SA9023." By switching to a new, well-established IC design and overhauling the circuitry, we've improved basic performance.

・Change to the new-generation "SA9023" IC ・Overhauled main board The #1 popular mobile DAC has evolved with improved sound quality!

The #1 popular FX-04J, featuring an ultra-high-performance DAC IC that surpasses high-end audio, is now available at an affordable price. Through meticulous revisions to every detail, the FX-04J+ delivers the ideal operating environment for the op amp!

The sound quality, surpassing that of conventional USB bus-powered operation, delivers a realistic sound that makes you feel as if you're listening to a performance right in front of you, while also offering easy portability.

[About the ES9018K2M] The audio battlefield is currently shifting from indoors to mobile devices. Among these, ESS's announcement of the 32-bit SABRE32 2M DAC "ES9018K2M" is still fresh in our memory.

The SABRE32 2M DAC series employs ESS's patented Hyperstream and Time Domain Jitter Eliminator technologies to achieve a wide DNR, low jitter, and low power consumption. These technologies are not only used in professional audio equipment, but also in mobile devices, taking advantage of their low power consumption, bringing about an evolution in mobile audio itself.

[Key IC Specifications] ■USB Receiver IC (DDC): Savitech BRAVO SA9023 Supported Formats: Up to 24-bit/96kHz ■DAC IC: ESS Technology ES9018K2M High-End Audio DAC IC Dynamic Range: 127dB THD+N: -120dB ■LPF Circuit Op-Amp: Texas Instruments TL072 Independent Left and Right Channel Design ■Reference Voltage Generation Op-Amp: JRC NJM4580 ■Differential Conversion Op-Amp: Texas Instruments TL072

[Notes] ※If sound stops, check the USB recognition status and audio output destination settings. ※The LED indicator to the left of the USB port lights up when power is applied. (It does not flash!) Old USB cables deteriorate. This can cause issues such as noise, audio dropouts, and poor recognition. Please use a new cable. *If there are abnormalities in the volume, noise, or no sound at all, there is a problem with the connection cable and you should replace it. *When operating the power supply, be sure to first turn off the power to the output-side connected amplifier.

[Product Specifications] Brand: FX-AUDIO Model Number: FX-04J+ Color: Black Warranty Period: 6 months from date of purchase Digital Input: USB Type B, USB 1.1/2.0 compatible, USB Audio Class 1.0 Analog Output: Stereo RCA Supported Formats: PCM up to 24-bit, 96kHz DAC IC: ESS Technology ES9018K2M (DNR: +125dB / THD+N: -120dB) USB Receiver IC: Savitech BRAVO SA9023 (USB-DDC) Compatible OS: Windows 11/10/8 (8.1), 7/Vista/XP/2000, MacOS X/9.1 or later Accessories: Instruction Manual Dimensions: 51mm W x 78mm D x 21mm H (excluding protrusions) Weight: 80g Further tuning of the power circuit ensures ideal performance 32-bit high-end mobile audio DAC ESS ES9018K2M amplifiers are used. Output coupling-free design, optimized for audio. Separate left and right op-amp LPF circuits and op-amp differential conversion circuitry.