--- product_id: 87695065 title: "Monolith 133304 Liquid Spark Headphone Amplifier - by Alex Cavalli with RCA Input, Single 1/4 Output 1.3Watt@50R, 108Db" brand: "monoprice" price: "€ 304.16" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.gr/products/87695065-monolith-133304-liquid-spark-headphone-amplifier-by-alex-cavalli-rca store_origin: GR region: Greece --- # 1.3W output power DC coupled, capacitor-free signal path 108dB signal-to-noise ratio Monolith 133304 Liquid Spark Headphone Amplifier - by Alex Cavalli with RCA Input, Single 1/4 Output 1.3Watt@50R, 108Db **Brand:** monoprice **Price:** € 304.16 **Availability:** ✅ In Stock ## Summary > 🎶 Spark your sound, ignite your vibe. ## Quick Answers - **What is this?** Monolith 133304 Liquid Spark Headphone Amplifier - by Alex Cavalli with RCA Input, Single 1/4 Output 1.3Watt@50R, 108Db by monoprice - **How much does it cost?** € 304.16 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/87695065-monolith-133304-liquid-spark-headphone-amplifier-by-alex-cavalli-rca) ## Best For - monoprice enthusiasts ## Why This Product - Trusted monoprice brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Yet Mighty:** Small footprint, big sound—designed by Alex Cavalli to fit seamlessly on your desktop without sacrificing performance. - • **Noise? What Noise?:** Ultra-low distortion and a 108dB SNR ensure your music stays pristine, every single time. - • **Versatile Connectivity:** RCA preamp outputs controlled by volume knob let you easily integrate powered speakers for a full desktop audio setup. - • **Risk-Free Audio Upgrade:** Backed by a 1-year warranty and 30-day money-back guarantee—join the savvy listeners who refuse to settle. - • **Pure Power, Zero Compromise:** Experience crystal-clear amplification with 1.3 watts of clean output power, perfect for demanding audiophiles. ## Overview The Monolith 133304 Liquid Spark Headphone Amplifier by Alex Cavalli delivers 1.3 watts of clean power at 50 ohms with an impressive 108dB signal-to-noise ratio. Featuring a DC coupled, capacitor-free signal path and laser-matched low-noise JFETs, it ensures ultra-low distortion and pristine audio clarity. Compact and versatile, it includes RCA preamp outputs controlled by the volume knob, making it ideal for desktop setups. Supported by a 1-year warranty and 30-day return policy, it’s a premium yet affordable upgrade for discerning listeners. ## Description The Monolith liquid spark is a compact headphone amplifier developed by Alex Cavalli for Monoprice. It provides everything people have come to expect from a Cavalli design. It uses dual 18 V filtered power supply Rails to produce wide voltage swings for additional headroom. The spark offers plenty of power at 1300MW RMS into 50ohms (per channel), with very low distortion, and switchable gain. ## Features - Effortless sound: The design of the spark is a DC coupled topology from input to output, meaning it has no capacitors in the signal path to detract from the sound - Exceptional design: the spark uses laser matched, low noise, audio jfets for its differential input stage and high performance, but very small mosfets for output power leading to super clean Amplification and high power from a small footprint - Clean preamp output: The spark additionally has preamp output RCAs, controlled by the volume pot, for use with powered speakers. An ideal configuration for an entry level desktop set up which performs well above its price point - If you want to be where the music wants you to be the liquid spark will effortlessly put you there at a very affordable price. THD+N (both channels)- 1 Vrms (20mW)- 0.007% THD+N @ 1kHz. 5 Vrms (530mW)- 0.035% THD+N @ 1kHz. 10 Vrms (2.12W)- 0.065% THD @ 1kHz - Buy with confidence: Monoprice not only stands behind every product we sell with a 1 year repair warranty, we offer a 30-day money back guarantee as well ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B07JW7NSXT | | Best Sellers Rank | #107,277 in Electronics (See Top 100 in Electronics) #195 in Headphone Amps | | Brand Name | Monoprice | | Customer Reviews | 4.4 4.4 out of 5 stars (376) 4.4 out of 5 stars | | Global Trade Identification Number | 00889028084601 | | Included Components | Monolith Liquid Spark Headphone Amplifier | | Item Dimensions | 11.1 x 7.3 x 2.8 inches | | Item Type Name | Monolith Liquid Spark Headphone Amplifier - by Alex Cavalli with RCA Input, Single 1/4 Output 1.3Watt@50R, 108dB | | Item Weight | 0.27 g | | Manufacturer | Monoprice | | Maximum Output Power | 1.3 watts | | Maximum Supply Voltage | 18 volts_of_direct_current | | Minimum Supply Voltage | 17 volts_of_direct_current | | Model | 133304 | | Mounting Type | Freestanding | | Number Of Channels | 1 | | Number Of Items | 1 | | Output Power | 1.3 watts | | Package Type Name | Retail Box | | Part Number | 133304 | | Specification Met | Fcc, Ices-003 | | Supply Current | 72 milliamps | | Upc | 889028084601 | | Voltage | 18 volts | | Warranty Description | 1 | ## Product Details - **Item dimensions L x W x H:** 11.1 x 7.3 x 2.8 inches - **Manufacturer:** Monoprice - **Maximum Supply Voltage:** 18 volts_of_direct_current - **Mounting Type:** Freestanding - **Voltage:** 18 volts ## Images ![Monolith 133304 Liquid Spark Headphone Amplifier - by Alex Cavalli with RCA Input, Single 1/4 Output 1.3Watt@50R, 108Db - Image 1](https://m.media-amazon.com/images/I/51IvBJfNQSL.jpg) ![Monolith 133304 Liquid Spark Headphone Amplifier - by Alex Cavalli with RCA Input, Single 1/4 Output 1.3Watt@50R, 108Db - Image 2](https://m.media-amazon.com/images/I/51vV+JjSN0L.jpg) ![Monolith 133304 Liquid Spark Headphone Amplifier - by Alex Cavalli with RCA Input, Single 1/4 Output 1.3Watt@50R, 108Db - Image 3](https://m.media-amazon.com/images/I/61J+drB-KUL.jpg) ![Monolith 133304 Liquid Spark Headphone Amplifier - by Alex Cavalli with RCA Input, Single 1/4 Output 1.3Watt@50R, 108Db - Image 4](https://m.media-amazon.com/images/I/61HtLjOdkIL.jpg) ![Monolith 133304 Liquid Spark Headphone Amplifier - by Alex Cavalli with RCA Input, Single 1/4 Output 1.3Watt@50R, 108Db - Image 5](https://m.media-amazon.com/images/I/61d6CXyFlbL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ My current favorite headphone amp. *by on Reviewed in the United States April 4, 2021* I have been buying headphone amps since the Creek OBH11 came out,in 2003, (which was a disaster)...and have graduated to the O2, (meh)... and from that to the Cavalli Massdrop CTH tube hybrid (sweet and smooth tube-like warmth)...a few DAC/amps of various brands..and on to the Schiit Jotunheim (still a reference for me)...until I decided to check out the latest versions of amps that sell for around $100.00. I bought the Schiit Magni 3+...the Schiit Heresey....and the Cavalli designed Liquid Spark prodced by Monoprice.I am amazed by what fine quality now comes in these small packages!!As a long time speaker designer and builder, I love hearing music through different systems, and comparing the sound of different transducers and components in the payback chain. so...I conducted extensive listening, on each amp, with three headphones of my choice, The Audeze 2 Closed, The Sennheiser Amperior, and the Audeze LCD X, to a wide variety of music from CDs after all the headphone amps had burned in for about 100 hours.I compared five headphone amps, the two small Schiit amps, (Heresy & Magni3+)... (the two Alex Cavalli amps, (the CTH & the Liquid Spark)...and my long-time standard, the Schiit Jotunheim, which is by far the most costly of these amps, using a Schiit Bifrost DAC fed S/PDIF optically from a Yamaha CD changer. Three amps were simultaneously connected on identical cables, (from WBC), to that wonderful DAC.I realize this is not a scientific study with double blind tests. I realize I have personal biases concerning sonic preferences, and music, as does everyone. I have a home recording studio with good gear, and I record mix, and master both acoustic and electronic music. I have been doing this for decades (5) and still have good hearing (so grateful!), for a guy my age. That said my ears roll off at 14Khz now...but it happens so gradually, you think you still hear everything (lol). I do like to ask others of their opinions on sound, and read a lot of reviews on equipment, (and see and hear them)....yep ...hooked.:-)Cutting to the chase, purely subjectively, here are my findings;1) Jotunheim barely retains first place, but only wins in its balanced mode, which is unfair due to the fact the other amps are not balanced, and are a fraction of Jotunheim's price. If I were to rate these amps strictly in S.E mode the Jotunheim would tie witrh the Liquid Spark on these headphones. If your cans are not efficient or harder to drive, the Jotunheim would rule here with its huge power, even in SE mode.2) Liquid Spark, when using the cans I had, and comparing all SE, ties the Jotunheim! It excels in detail presentation, resolution, sound staging and space, lack of grain or glare, solid punch, low bass, airy highs, and musical presentation in general in all music types. I think this amp would pair well with headphones with well balanced frequency responses. Bass shy, overly bright headphones ,(I won't mention names), might sound best with the Cavalli CTH, with its warm smooth character and broad imaging.3) Schiit Magni 3+ is a winner I could be entirely happy to live with as my only amp, if I hadn't heard and lived with the Liquid Spark, that is. The Schiit has a slightly warmer and ever-so-slightly smoother sound signature that is powerful and dynamic, but not as refined or transparent as the MonolithTo sum up, the best of these four amps, used single ended, is the Liquid Spark, hands down. Follow the directions for use that come with it, and be patient with burn-in , and give this amp time to mellow (and it does beautifully). It will reward you with superb sound. The Liquid Spark runs quite warm, as does the Schiit Magni 3+, but the Heresy doesn't. That is all I wish to say about the Heresy. It left me cold. ### ⭐⭐⭐⭐⭐ Fantastic for the price. *by on Reviewed in the United States January 6, 2019* I've been doing reviews on my purchases for the past 2 hours lol so I'm a little burnt out and will finish this one quick. This amp (for the price) truly deserves a well thought out and lengthy review but I'm to tired. So here this goes. Short and sweet. This is Hands down the best amp on the market for under $140. It's only competitors are the schiit magni 3 and JDS Labs atom.Power:1) schiit magni 32) liquid spark3) atomBuild:1) schiit magni 32) liquid spark3) atomSound quality:1) JDS Labs atom2) liquid spark (very close to atom. I'm talking fractions close. Not even that noticable of a difference but measurements show atom is slightly better)3) schiit magni 3 (there is a higher noticable difference in sound quality compared to the other 2. This amp is all power and build quality for the price but lacks a very clean sound)If you have headphones that require a nuclear reactor to power lol and your on a real budget then the schiit magni 3 "might be" your best choice and that's a slight "might be." The liquid spark is not to far behind the magni 3 in power but miles ahead in clean sound quality. It's a tight race for best budget amp between the liquid spark and JDS Labs atom. With the liquid spark having more power, considerably better build quality and only a fraction of lesser quality clean sound I have to give the best budget amp award to the liquid spark. This is truly a very impressive amp for the price that drives almost all headphones without problem. I can't gush enough about what you are getting for the price here. Absolutely superb. To be perfectly honest though you can't really go wrong with any of the three. If your looking to buy a $100 amp then my guess is your just an average every day consumer/listener who isnt going to be a snob about your equipment and with that being the case all three of the amps I mentioned are fantastic choices and comes down to what your needs are. It comes down to this. If your looking for the Absolute cleanest sound and your not focused on power and build because you have very efficient headphones and your careful with your equipment then get the jds Labs atom. If your not worried about very clean sound and you want heavy power and great build quality then get the schiit magni 3. If your looking to meet somewhere in the middle and have the best of both worlds then get this the liquid spark. Hoped this help make you a decision on which to buy. Take care and enjoy my fellow audio fanatics. ### ⭐⭐⭐⭐⭐ Impressive audio quality *by on Reviewed in the United States August 19, 2019* I am not the worlds best fundi on audio - but I do know what sounds good, and what doesn't.I bought this unit as well as a Neoteck unit as I wanted the Liquid spark for the desk, and the Neoteck as a portable unit.So - tested the Neoteck first, and it is a good little unit, good sound and works well.THEN - after a day or two, I plugged the liquid spark in.Well wow - this Monolith Liquid Spark is proper decent people - I know she still has a ways to go before reaching the magical burn in - but even straight out of the box you can hear this baby purr..Truly soft and mellow, tight controlled bassyness, and nightingale sweet high end this little monster is a brick in a velvet cloth.Truthfully the soundstage is more open and clear, stereo separation is also something that is managed very, very well.After a day or two, I took her for a run and cranked her up a bit, she has long breaths, and when she gets striding, she has has breath to spare, on your standard sort of 32 Ohm cans, you're going to hit the wall long before she will. Lovely power, and always controlled - a bit like Tracy Chapman belting it for all she is worth.One thing that did surprise me about this little monolith is that after an extended period of long listening at higher volumes, you won't feel fatigued either. now THAT is impressive. High end is carried very well, and never gets harsh.This is a unit that I would not hesitate to recommend, Yes, there are better units out there, but not at twice the price. ## Frequently Bought Together - Monolith 133304 Liquid Spark Headphone Amplifier - by Alex Cavalli with RCA Input, Single 1/4 Output 1.3Watt@50R, 108Db - Amazon Basics 3.5mm Stereo Aux to 2 x RCA Audio Cable Adapters, 4 Feet/1.2 m, for Connecting Amplifiers, Speakers, with Gold-Plated Plugs, Black - Tan QY 2RCA to 2RCA Cable 3Ft, Gold-Plated 2 RCA Male to 2 RCA Male Stereo Audio Cable for Home Theater, HDTV, Gaming Consoles, Hi-Fi Systems (3Ft/1M) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/87695065-monolith-133304-liquid-spark-headphone-amplifier-by-alex-cavalli-rca](https://www.desertcart.gr/products/87695065-monolith-133304-liquid-spark-headphone-amplifier-by-alex-cavalli-rca) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-08-23*