Monoprice
Monolith Liquid Spark
Best desktop amplifier for audiophiles seeking clean power on a budget.
Experience pure, effortless audio with the Monolith Liquid Spark headphone amplifier. Designed by Alex Cavalli for Monoprice, this compact powerhouse delivers exceptional clarity and robust performance. Its unique DC-coupled topology and dual 18V power rails ensure a clean signal path and ample headroom. With 1300mW RMS into 50 ohms and very low distortion, it drives demanding headphones with ease. The Liquid Spark also features switchable gain and preamp outputs, making it a versatile and high-value centerpiece for any desktop audio setup.
$164.99
Owner Satisfaction
4.5
/ 5
Category Rank
388
/ 733
#388 in Headphone Amplifiers
Price vs Category Average
-88%
Below average
Output Power
130050
/ mW RMS into a ohm load
Who it's for
- Listeners seeking a rich, musical, and forgiving sound signature
- Owners of power-hungry or high-impedance audiophile headphones
- Budget-conscious hobbyists wanting high-end performance at a lower price
Who should skip it
- Users who prefer a plug-and-play experience without extra upgrade costs
- Desktop users with limited space or poor ventilation
- Audiophiles requiring balanced connections for their specific gear
Performance breakdown
Power Output
Delivers substantial current to drive demanding headphones with effortless authority.
Signal Clarity
DC-coupled topology ensures a transparent, noise-free path for your music.
Versatility
Switchable gain and preamp outputs make this a flexible desktop hub.
Build Quality
Compact, robust chassis feels built to last on any workstation.
Impedance Handling
Easily manages a wide range of headphones up to 600 ohms.
Ease of Use
Simple, intuitive controls prioritize a seamless and distraction-free listening experience.
Key Specs
Output Power
1300mW RMS into a 50 ohm load
Gain Settings
+3dB or +6dB
Input Interface
Unbalanced stereo RCA
Headphone Output
Unbalanced stereo 1/4" TRS jack
THD+N
0.007% THD+N @ 1kHz (1 Vrms)
Output Impedance
< 0.1 ohms
Dimensions
4.6" x 3.7" x 1.5" (117 x 94 x 38 mm)
Signal-to-Noise Ratio
>105dB
Features
- Developed by acclaimed designer Alex Cavalli
- Clean signal path with DC coupled topology
- Robust power for demanding headphones
- Switchable gain for personalized listening
- Versatile preamp outputs for powered speakers
- High-performance JFET input stage
- Compact and space-saving design
- Super clean amplification
What customers say
The Monolith Liquid Spark earns high praise for its exceptional value and sound quality. Customers consistently highlight its clean, neutral, and powerful amplification, noting it drives demanding headphones effectively with excellent dynamics. Reviewers frequently observe significant improvements in bass control and overall clarity compared to standard audio setups. The build quality is solid, featuring a durable metal chassis. This amplifier is widely regarded as offering performance far exceeding its modest price point, making it a top recommendation for audiophiles seeking a substantial upgrade without significant expense. Its focus remains squarely on pure audio performance.
Know before you buy
Yes, the Liquid Spark is designed to handle demanding headphones up to 600 ohms. With 1300mW of power into a 50-ohm load, it provides plenty of headroom for most audiophile-grade headphones.
Absolutely. The unit features dedicated preamp outputs on the back, allowing you to control the volume of your powered speakers directly from the amplifier.
The gain switch allows you to toggle between +3dB and +6dB. This is useful for matching the amplifier's output to the sensitivity of your specific headphones, ensuring you have a usable volume range on the knob.
Yes, the Liquid Spark is a dedicated analog headphone amplifier. You will need to connect an external DAC or an analog source, such as a CD player or turntable preamp, to the RCA inputs.
The Liquid Spark features a standard 1/4" (6.35mm) TRS jack. If your headphones use a 3.5mm plug, you will simply need a standard 1/4" adapter to connect them.
The DC-coupled design removes capacitors from the signal path, which helps maintain a cleaner, more transparent signal. This results in lower distortion and a more accurate representation of your music.
Still have a question?
Ask Hayley anything about this product before you decide.