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This digital amplifier features a dual-mono amplifier configuration with two YAMAHA YDA138 digital amplifier ICs.

It's a multi-functional and fun amplifier equipped with features such as USB-DAC functionality, 3-input switching, electronic volume control, tone control, headphone amplifier, loudness control, and gain boost.

Initially, it was developed as a completely in-house design, inheriting the functions and sound characteristics of our previously sold Lepai LP-2020A+. However, after gathering feedback from the prototype batch, we changed the concept to a pure line that leverages the characteristics of the dual-mono configuration, further improving sound quality and operability!

This is the 6th batch, available from May 7th, 2021.

[Changes from the 5th to the 6th lot] Changed the capacitor in the output stage LPF circuit Details here >> http://nfj2019.livedoor.blog/archives/9594193.html

[Product Features - Functionality]

■ 3-input switching (USB-DAC/3.5mm STEREO/RCA) ■ Built-in USB-DAC (Supported formats: up to 16bit 44.1kHz/48kHz) ■ Loudness function (ON/OFF) ■ Gain boost function (ON: +11.25dB / OFF: 0dB) ■ Mute function (ON/OFF) ■ Tone control function (TREBLE: ±14dB [±7 Step] / BASS: ±14dB [±7 Steps]

【Product Features - Sound Quality】

■ Dual-mono digital amplifier

■ Dual-mono headphone amplifier

■ DSP-based electronic volume and tone control

■ Operational amplifier buffer circuit

■ Power supply noise reduction circuit

【Notes】

・This product does not include a power supply. Please purchase an AC adapter separately.

Recommended AC adapter: https://www.amazon.co.jp/dp/B01M4JK604

・The 3.5mm stereo mini-jack input terminal is not guaranteed to work with 4-pole plugs (TRRS).

・The headphone output terminal is not guaranteed to work with 4-pole plugs (TRRS).

【Product Specifications】

Color: Black Product Warranty Period: 6 months from the date of purchase Digital Amplifier IC: YAMAHA YDA138 Digital Amplifier IC x 2, Dual Mono Configuration DSP IC: Titan Electronics TM2313 Hi-Fi Audio Processor USB-DAC IC: C-Media HS100B Input Terminals: [LINE-IN1] Stereo RCA terminal / [LINE-IN2] 3.5mm stereo mini jack / [USB] USB Type-B terminal Input Switching: 3 systems (RCA/3.5mm/USB) Output Terminals: 2ch stereo speaker output (gold-plated terminals compatible with banana plugs) / Front headphone jack (3.5mm stereo mini jack) Headphone Output: Maximum output 50mW x 2ch (@32Ω) Main Amplifier Maximum Output: Maximum 20W x 2ch (at 12V power input, 4Ω) Compatible Speakers: 4Ω to 16Ω Compatible OS: Windows 11/ 10/ 8 (8.1) 7/ Vista / XP / 2000 / MacOS X / 9.1 or later Power Supply: DC12V, 2A or higher recommended (AC adapter sold separately) Power Connector: Outer diameter 5.5mm, Inner diameter 2.1mm (Center positive) Functions: Gain boost function, 3-input switching, independent MUTE control, loudness function, tone control function (control setting reset) Protection Circuits: Bop noise reduction function (enhanced), overcurrent protection function (output short circuit protection), overheat protection Accessories: Remote control, quick start guide Dimensions: Height 35mm x Width 117mm x Depth 100mm (excluding protrusions) Weight: Approx. 360g

*Specifications and design may change without notice due to improvements, etc.

Features tone control, loudness control, gain boost, and mute function. Three input options (RCA/3.5mm/USB), electronic volume control, built-in USB-DAC and headphone amplifier. Two Yamaha YDA138 digital amplifier ICs; dual-mono drive digital amplifier. Dedicated remote control included as standard. AC adapter required (sold separately): DC12V/2A, DC jack 5.5mm x 2.1mm (center positive).