
@v-mire.net
Why everyone praises the Ampapa D1 amplifier with TPA3255 2x 300W

@Williston Audio Labs
This Little Amp Has a SHOCKING Feature

@Souzoukan Technical Report
Revealing the performance of the Chinese-made Ampapa D1 with a glass window

@HiFi Huff
FUN! Comparing SIX Integrated Amps from $199 to $25,000. Also, are Separates BETTER?

@Old Guy Hifi
Not in price but in Performance! The Ampapa (Douk) D1 Hifi Amp.

@Christian Schwarzbeck - China-HiFi
Ampapa D1 – Der kompakte High-Tech-Verstärker mit 3 Eingängen, VU-Metern, PFFB & Hochpassfilter!
Unboxing Video
Level mode
Standby mode
- Unique and amazing combination: integrated ST-01 PRO amplifier with VU meter into whole in such a mini size, the pointer dancing in the warm light with strong vintage feelings when enjoy HiFi music, dynamically decorates the audio system space.
- HiFi clear sound with tone control: resonable circuit and concise wiring, adopts vacuum tubes to soften the sound and filter out the digital feelings, sounds warm and sweet without noise. Also with treble and bass knobs to adjust one's own preferable sound styles, presents HiFi music with rousing highs and deep lows.
- Unleash Hi-Res with XMOS XU316: Asynchronous USB processing handles PCM up to 32-bit/768kHz and DSD512, delivering high-rate audio for capable DACs with greater clarity and stability. I2S Strong output power and special AUX output: use TI's classic power amp IC, each channel can output 100W(4Ω) and easily to drive all 3-8Ω passive speakers, adds 3.5mm AUX output easy to connect another amplifier or active speaker / subwoofer to build multiple channel system and enjoy wonderful home theater experience.carries the highest rates beyond standard S/PDIF bandwidth, keeping your digital front end from becoming the bottleneck.
- With multiple digital audio inputs: Bluetooth 5.0 / USB / Coaxial / Optical / stereo RCA, compatible with most audio device such as phones, computers, tablets, TVs, TV, CD players etc. The perfect combination of DAC and amplifier, very suitale for audiophiles who have various audio devices.
- Practical functions to simplify use: with full-function remote control, all settings can be achieved from the distance; with input selection and indicators, clearly to show the working status in real time; aluminum alloy case is specially designed, cool and unique to decorate your desktop space.
- Brand: Douk Audio
- Model: ST-01 PRO
- Audio input: Bluetooth / USB (PC-USB) / Coaxial / Optical / RCA / U-disk
- Audio output: Banana speaker jacks / 3.5mm AUX
- Max output power: 100W+100W (4Ω)
- Matched impedance: 3-8Ω
- Sampling rate supported:
USB input: 96KHz/24Bit
Bluetooth input:48KHz/24Bit
COAX/OPT inputs: 192KHz/24Bit - Supported formats of U-disk: MP3 / WAV / WMA / FLAC / APE
- Max capacity of U-disk: 64G
- Treble / Bass adjustment range: ±6dB
- System PC-USB supported: XP/W7/W8/W10/MAC/ Linux
- Frequency response: 20Hz-20kHz(±1dB)
- S/N ratio: ≥98dB
- THD: 0.07%
- Working voltage: DC 18-30V
- Dimensions(W*D*H): 115*98*54mm / 4.53*3.86*2.13in
- Package dimensions(W*D*H): 295*225*85mm / 11.61*8.56*3.35in
- Net weight(ST-01 PRO): 661g / 1.46lb
- Package weight: 1.4kg / 3.09lb
- ST-01 PRO Amplifier ×1
- DC 24V Power Adapter ×1
- Remote Control (without 2*AAA batteries) ×1
- USB Cable ×1
- Bluetooth Antenna ×1
- User Manual ×1
User Manual of Douk Audio SUC-ST-01-PRO
FAQs
Q: What upgrades does the ST-01 PRO offer?
A:
In addition to retaining all the original functions of the ST-01, the ST-01 PRO adds U-disk input for lossless music playback, VU meter sensitivity adjustment on the bottom for better matching with different input signals, and three decorative golden circles around the tubes and VU meter for a more exquisite and luxurious look.
Q: What upgrades does the PRO version offer?
A: The upgraded ST-01 PRO adds U-disk input for lossless formats, adjustable VU meter sensitivity for signal matching, and decorative gold rings for a premium look. Enhances usability and aesthetics.
Q: How does the VU meter improve my setup?
A: It dynamically dances to music under warm lighting, creating vintage vibes and enhancing room decor. Perfect for immersive HiFi experiences.
Q: Can I customize the sound output?
A: Yes! Use treble/bass controls (±6dB) and vacuum tubes to warm audio, eliminating digital harshness. Ideal for personalized, sweet-sounding HiFi with deep lows and clear highs.
Q: What speakers work with this amplifier?
A: Drives all 3-8Ω passive speakers with 200W total power. Includes AUX output for connecting subs or additional amps, enabling easy multi-channel home theater setups
Q: Which devices connect to its inputs?
A: Compatible with phones, PCs, TVs, and more via Bluetooth 5.0, USB, coaxial/optical, or RCA. Supports high-res audio up to 192KHz/24Bit for audiophiles.

@cheapaudioman
Are they Even trying? Douk Audio ST-01-Pro vs Aiyima T9

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Douk Audio ST-01 PRO Mini Valve Amplifier - REVIEWED and TESTED. 200W MAX POWER

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Douk Audio ST-01 PRO Review | All-In-One Bliss


The Upgrade Started With Listening
Proven Over Time, Made for Every Day
Backed by years of real-world use, ST-01-PRO has earned lasting recognition with an upgrade you can truly hear. It brings warm, engaging sound and fresh enjoyment to familiar music, making refined HiFi easier to enjoy.
- Inputs: Bluetooth 5.0 / PC-USB / Optical / Coaxial / RCA / USB Drive
- Outputs: Speaker Out / Pre-Out
- Max Output Power: 100W × 2 @ 4Ω
- Speaker Impedance: 3–8Ω
































