The Fosi Audio BT30D Pro amplifier promises powerful sound in a compact package, a tempting proposition for desktop audio enthusiasts and those with space constraints. This review delves into the performance and capabilities of this surprisingly small but potent amplifier, examining its build quality, connectivity options, and sound reproduction across various speaker setups. We'll explore whether the BT30D Pro delivers on its promise of powerful audio, considering its suitability for different listening environments and comparing its performance to more established, higher-wattage amplifiers.Our testing involved a range of speakers, from bookshelf units to larger floor-standing models, to assess the amplifier's limitations and strengths. We analyze its suitability for near-field listening versus larger listening rooms, focusing on sound clarity, bass response, and overall power output. The review concludes with an assessment of the BT30D Pro's value proposition, considering its strengths and weaknesses to determine its ideal user and application.
Pros And Cons
- Small size and lightweight
- 165 watts * 2 into 4 ohms
- Rated for 2 to 8 ohm speakers
- Passive output for subwoofers (350 watts)
- 3.5mm preout for powered speakers or subwoofers
- Sufficient power for near-field desktop listening
- Good sound stage and width in desktop setup
- Lacks the power and resolution of larger amplifiers for larger speaker systems (e.g., in a home theater setup)
- Mid-range sounds recessed compared to larger amplifiers
- Highs are good but not as resolving as larger amplifiers
- Requires higher volume settings to match larger amplifiers in larger systems
- Potentially taxing on the amp and speakers if used with high-power speakers at high volumes for extended periods
Read more: Fiio K11 R2R DAC/Amp Review: A Worthy Upgrade or Redundant Luxury?
Unboxing the Fosi Audio BT30D Pro
The Fosi Audio BT30D Pro arrived in a well-packaged box. Inside, I found the amplifier itself, a power supply (5 amp 48vt), a user manual, and cables. The power supply was a welcome upgrade, enhancing the overall user experience. The build quality felt solid and premium for its compact size.
Features and Connectivity of the BT30D Pro
The front panel boasts intuitive controls: a power button, sub-frequency and volume dials, along with bass, treble, and master volume controls. The rear panel features RCA line input (for DAC or preamp), a 3.5mm pre-out (for subwoofer or external amp), and three sets of binding posts for speakers (left, right, and subwoofer). Bluetooth and DC power input are also present.
This makes the BT30D Pro versatile and compatible with various audio setups. The multiple inputs and outputs provide flexibility in how you integrate it into your existing system.
Sound Quality and Performance Comparisons
I tested the BT30D Pro with several speaker setups, including Bowers & Wilkins 686 S2s, Martin Logan Montages, and using a Fio K11 DAC as a source. While driving the smaller bookshelf speakers in a near-field setup, the amplifier performed admirably, delivering clear sound and sufficient power for desktop use.
However, when connected to larger, more demanding speakers in a larger listening space, the BT30D Pro showed limitations in comparison to more powerful amplifiers like the Pioneer Elite VSSX52 or the Morance MM755. While it produced sound, the overall clarity, detail, and bass impact were noticeably less impressive.
Size and Power Output: The Elephant in the Room
The BT30D Pro's compact size and surprisingly low weight raise questions about its power output (165 watts x 2 into 4 ohms). Compared to larger amps with higher wattage ratings, the BT30D Pro might seem underpowered.
However, this amplifier excels in near-field listening environments. For desktop setups, the 165 watts is ample power, and the passive subwoofer output provides a well-rounded 2.1 system. Attempting to use it with larger speakers at higher volumes in a larger room may reveal its limitations
Conclusion: Ideal for Desktop, Limited for Larger Systems
The Fosi Audio BT30D Pro is a great little amplifier for desktop setups and near-field listening. Its compact size, versatile connectivity, and sufficient power output make it a strong contender for smaller systems. The sound quality was satisfactory for its intended purpose, however, it struggles with larger speakers, lacking the detail, power, and soundstage of higher-end amplifiers.
Ultimately, consider the BT30D Pro as a solid choice for desktop users seeking a powerful and compact amplifier. However, those looking for an amp to drive larger speakers in a larger listening space should explore more powerful options. It's not about the wattage alone, but the overall system synergy and the intended listening environment.