This is a dual-mono digital amplifier equipped with two Yamaha YDA138 digital amplifier ICs.
It's a multi-functional model with features like a USB-DAC, three-input switching, electronic volume and tone control, headphone amplifier, loudness control, and gain boost, making it a fun amplifier to play with.
It was originally developed as a completely in-house design as a successor to the Lepai LP-2020A+, which we previously sold, inheriting the functionality and sonic characteristics of the LP-2020A+. However, after collecting feedback from the sale of a prototype batch, we changed it to a pure-line concept that takes advantage of the characteristics of the dual-mono configuration, further improving the sound quality and operability!
The sixth batch will be available on May 7, 2021.
[Changes from Lot 5 to Lot 6]
Changed the capacitor in the output stage LPF circuit.
For more details, click 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 16-bit 44.1kHz/48kHz)
■Loudness control (ON/OFF)
■Gain boost (ON: +11.25dB / OFF: 0dB)
■Mute function (ON/OFF)
■Tone control (TREBLE: ±14dB [±7 steps] / 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 requires a power supply sold separately. 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 a 4-pole plug (TRRS).
- The headphone output terminal is not guaranteed to work with a 4-pole plug (TRRS).
[Product Specifications]
Color: Black
Warranty Period: 6 months from the date of purchase
Digital Amplifier IC: Two Yamaha YDA138 digital amplifier ICs (dual mono configuration)
DSP IC: Titan Electronics TM2313 Hi-Fi Audio Processor
USB-DAC IC: C-Media HS100B
Input Terminals: [LINE-IN1] Stereo RCA / [LINE-IN2] 3.5mm Stereo Mini Jack / [USB] USB Type-B
Input Switching: 3 Inputs (RCA/3.5mm/USB)
Output Terminals: 2-Channel Stereo Speaker Output (Gold-Plated Banana Plug Compatible) / Front Headphone Jack (3.5mm Stereo Mini Jack)
Headphone Output: Maximum Output 50mW x 2 Channels (@32Ω)
Main Amplifier Maximum Output: Maximum Output 20W x 2 Channels (12V Power Input, 4Ω)
Speaker Support: 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: 5.5mm outer diameter, 2.1mm inner diameter (center positive)
Features: Gain boost, 3-channel input switching, independent mute control, loudness control, tone control (control setting reset)
Protection Circuits: Enhanced pop noise reduction, overcurrent protection (output short circuit protection), overheat protection
Accessories: Remote control, simple instruction manual
Dimensions: 35mm high x 117mm wide x 100mm deep (excluding protrusions)
Weight: Approximately 360g
Specifications and design may be changed without notice for product improvement reasons. Equipped with tone control, loudness control, gain boost, and mute functions.
3-channel (RCA/3.5mm/USB) input switching, electronic volume, USB-DAC, and built-in headphone amplifier.
Two Yamaha YDA138 digital amplifier ICs for dual mono drive.
Includes dedicated remote control.
AC adapter required (sold separately): DC12V/2A, DC jack 5.5mm x 2.1mm (center positive)
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