Fosi Audio GR40 Tube DAC Preamp
€ 115,00 Incl. Vat
✅ 2 years standard warranty
✅ Free return within 14 days
✅ Orders before 17:00 → shipped today
🟢 On stock
1 in stock|Delivery time: Order before 17:00h, shipped today mo-fr
Fosi Audio GR40: ESS9028Q2M DAC
Fosi Audio’s GR40 features an ESS9028Q2M DAC chip for precise digital-to-analog conversion. This DAC supports audio streams up to PCM 32bit 384kHz and DSD256, guaranteeing faithful, detailed sound reproduction.
- Multifunctional DAC Preamplifier: The GR40 is a versatile tube DAC preamplifier and headphone amplifier in one, it supports Bluetooth/USB/Optical/Coaxial inputs and active speakers/3.5mm headphone output, with a priority mode for headphones.
- High-Resolution Decoding: With the ESS9028Q2M DAC chip, the preamplifier offers superior audio quality and flexibility. The USB sampling rate supports 32Bit/384kHz and DSD256, making an effective noise reduction to ensure lossless audio every time.
- Advanced Bluetooth with Low Latency: Featuring the QCC3031 Bluetooth module, it supports aptX, aptX-HD, and aptX-LL codecs to provide detailed and clean audio sound. Also, you can get a relaxed experience with low latency when watching movies.
- Compact yet Creativity: With its compact form and a combination of preamp volume, bass, and treble controls, the stereo preamplifier produces a sweeter, more organic sound while preserving the midrange and treble frequencies that make music.
- User-Friendly Design: The digital-to-analog audio converter GR40 is designed with user convenience at its core, allowing you to toggle between different audio inputs and restore Bluetooth—a real Plug-and-plug DAC preamplifier without any driver.
Fosi Audio GR40: Tube preamplification & Tone control
The GR40’s preamplifier stage is based on two JAN 5654W tubes. The use of tube amplification technology gives the sound reproduction a warm, rich timbre, ideal for rediscovering your favorite tunes in a new light.
The Fosi Audio GR40 also features a 3.5mm headphone output, capable of delivering 300mW at 16 Ohm or 40mW at 300 Ohm.
In addition, two buttons on the front panel provide access to tone control. This makes it quick and easy to adjust bass and treble levels to suit your listening style and audio system.
Fosi Audio GR40: Puce Bluetooth 5.1 QCC3031
The GR40 integrates Bluetooth 5.1 connectivity thanks to the Qualcomm QCC3031 chip, offering high-quality wireless broadcasting. Compatible with aptX, aptX HD, aptX Low Latency, SBC and AAC codecs, the GR40 ensures an optimal sound experience even when wireless.
| Specifications | |
|---|---|
| Product type | DAC Preamplifier Headphone amp |
| Inputs | 1x USB-C 1x Optical Toslink 1x Coaxial Bluetooth 5.1 |
| Outputs | 1x Stereo RCA 1x Jack 3.5mm headphone output |
| Channels | Stereo (2) |
| SNR | 103dB |
| Dynamic range | 104dB |
| THD | ≤ 0.03% |
| Headphone impedance | 32Ω-300Ω |
| Headphone output power | 300mW @ 16Ω 250mW @ 32Ω 50mW @ 250Ω 40mW @ 300Ω |
| Frequency response | 20Hz-20kHz (±1dB) |
| Supported sampling rates | PCM up to 32bit 384kHz DSD up to DSD256 |
| Bluetooth chips | Qualcomm QCC3031 |
| Bluetooth version | 5.1 |
| Max Bluetooth range | 10m (clear of obstacles) |
| Supported Bluetooth codecs | aptX, aptX HD, aptX Low Latency, SBC, AAC |
| General | |
|---|---|
| Supply voltage | 12V DC 1.5A |
| Dimensions | 200 x 180 x 60mm |
| Weight | 800g |
| Color | Black |
| Package | 1x Fosi Audio GR40 1x Bluetooth antenna 2x JAN5654W tubes 2x Decorative rings 1x Power adapter |
Shipping - Made easy with DPD, DHL and your National shipping company
We deliver your Hifimastery order as quickly as possible via DPD, DHL, or PostNL (your country’s national postal service). You choose your preferred carrier at checkout. All shipments are insured and tracked, so we handle any loss or damage.
Shipping Costs:
- Netherlands & Belgium: Free shipping on orders over €50;
- Other European countries: Free shipping on orders over €100–€200 (depending on country, always visible in checkout before payment).
The higher the order amount the lower the shipping costs until the free shipping amount is reached, which is fair...
Order Shipping Times:
- Orders placed before 17:00h and in stock ship the same day monday-friday;
- In case a product has a longer delivery time than this is mentioned at the stock status!!!
You choose we follow:
You can choose in the checkout what shipping company you want us to use for shipping your order. Sometimes due to longer delivery times etc, we can choose another reliable partner based on your order.
Track & Trace
We know you’re eager to enjoy your order—and we completely understand! Once your order has been shipped via an external carrier, you’ll receive an email from us containing a tracking number or a direct link to the carrier’s tracking page. This lets you see exactly when your order is expected to arrive.
If your order is delivered to a pickup point due to your absence, you’ll be notified either through the tracking information or via services provided by the carrier.
Returns & Right of withdrawal – We keep it simple
Not satisfied with your purchase? No worries! Returning items is simple and stress-free.
✨ Key Highlights:
- No reason needed – return “just because”
- 14-day reflection period – from delivery date and within 14 days later you can decide to keep it or not...
- Fast inspection – returns inspected within a few days most of time 5 days (max 14);
- refund will be done mostly same day after inspection is done.
Return Conditions:
Items are undamaged and clean.
- All accessories included (also manual etc);
- Original packaging;
- Pack items securely for safe return;
- Sealed products remain unopened (applies to fragile or hygiene-sensitive items, e.g., turntable styli, in-ear earbuds).
For furniture, always choose Option 2.
Option 1 – Return Label:
- Use our return portal to print a return DPD shippinglabel;
- Coverage is up to €500 via DPD (other carriers not insured);
- Returns are at the customer’s risk and expense (if you need more insurance value contact us so we can check for higher insurance or choose option 2)
Option 2 – Own Carrier:
- Arrange return with a carrier of your choice;
- Email us: “Return: order number …” to receive a return form to include in your package;
- Return requested more than 2 weeks after delivery day cannot be processed and declined.
Timeframe:
- You have 14 days to request a return calculated from the day the package was delivered to you;
- The package must be received in our warehouse within 2 weeks after your request to return the product.
Exchange product:
- Place a new order for the desired product;
- Original order must be returned and will be refunded (minus any return costs);
- Refunds processed via the original payment method within 2 weeks.
