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expiredTattyBear | Staff posted Feb 26, 2024 10:03 PM

Monolith by Monoprice Liquid Spark Headphone Amplifier by Alex Cavalli

$60

$130

53% off
+ Free Shippingat Monoprice
38 Comments
21.3K Views
Visit Monoprice
Deal Details
Monoprice has Monolith Liquid Spark Headphone Amplifier by Alex Cavalli (33304) on sale for $59.99. Shipping is free.

Thanks to Deal Hunter TattyBear for finding this deal.

Specs:
  • Dimensions: 4.6" x 3.7" x 1.5" (117 x 94 x 38 mm)
  • Weight: 9.6 oz. (271g)
  • Headphone Output: Unbalanced stereo 1/4" TRS jack
  • Preamp Output: Unbalanced stereo RCA jacks
  • Signal-to-Noise Ratio: 108dB (ref. 1 Vrms input / 2 Vrms output @ 1kHz)
  • Crosstalk: –73dB (ref. 1 Vrms input / 2 Vrms output @ 10kHz)
  • Output Impedance: < 0.1 ohms
  • Gain: +3dB or +6dB
  • Input: Unbalanced stereo RCA
  • Output Protection: Delay and offset protection

Editor's Notes

Written by SlickDealio
  • About this Deal:
    • This price is $70 lower (53.9% savings) than the list price.
    • Rated 4.7 out of 5 stars from 77 reviews.
    • 3 Year Replacement Warranty
    • Please see the original post for additional details and give the WIKI and forum comments a read for helpful discussion.

Original Post

Written by TattyBear | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Monoprice has Monolith Liquid Spark Headphone Amplifier by Alex Cavalli (33304) on sale for $59.99. Shipping is free.

Thanks to Deal Hunter TattyBear for finding this deal.

Specs:
  • Dimensions: 4.6" x 3.7" x 1.5" (117 x 94 x 38 mm)
  • Weight: 9.6 oz. (271g)
  • Headphone Output: Unbalanced stereo 1/4" TRS jack
  • Preamp Output: Unbalanced stereo RCA jacks
  • Signal-to-Noise Ratio: 108dB (ref. 1 Vrms input / 2 Vrms output @ 1kHz)
  • Crosstalk: –73dB (ref. 1 Vrms input / 2 Vrms output @ 10kHz)
  • Output Impedance: < 0.1 ohms
  • Gain: +3dB or +6dB
  • Input: Unbalanced stereo RCA
  • Output Protection: Delay and offset protection

Editor's Notes

Written by SlickDealio
  • About this Deal:
    • This price is $70 lower (53.9% savings) than the list price.
    • Rated 4.7 out of 5 stars from 77 reviews.
    • 3 Year Replacement Warranty
    • Please see the original post for additional details and give the WIKI and forum comments a read for helpful discussion.

Original Post

Written by TattyBear | Staff

Community Voting

Deal Score
+27
Good Deal
Visit Monoprice

Price Intelligence

Model: Monolith by Monoprice Liquid Spark Headphone Amplifier by Alex Cavalli

Deal History 

Sale Price
Slickdeal
  • $NaN
  • Today

Current Prices

Sort: Lowest to Highest | Last Updated 8/3/2026, 03:56 AM
Sold By Sale Price
Amazon$131
NewEgg$131.99

Top Comments

nightanole
4.2KComments
662Reputation
Id give the nod to the liquid spark. If if went with schiit, id want the Magni+ so its DC direct. But remember the schiit amp is now discontinued, and schiit isnt known for quality or good RMA process.
Go to Comment
LovePotion9
147Comments
14Reputation
This amp has known issues with left or right channel imbalance sound. Bought one a while back when it was on sale for $50. RMA first one, the second one have a stuck volume knob. It just POS.
Go to Comment

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38 Comments

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Feb 27, 2024 4:26 PM
58 Comments
Joined Aug 2015
allfin4Feb 27, 2024 4:26 PM
58 Comments
or this?
Feb 27, 2024 5:00 PM
4.2K Comments
Joined Mar 2006
nightanoleFeb 27, 2024 5:00 PM
4.2K Comments

Our community has rated this post as helpful. If you agree, why not thank nightanole

Quote from allfin4 :
or this?
Id give the nod to the liquid spark. If if went with schiit, id want the Magni+ so its DC direct. But remember the schiit amp is now discontinued, and schiit isnt known for quality or good RMA process.
3
2
Feb 27, 2024 5:12 PM
269 Comments
Joined Jan 2011
pLLLFeb 27, 2024 5:12 PM
269 Comments
Does this suffer from imbalance? I forget the terms, but my magni 3+ or whatever has the issue where the volume knob is sensitive to sending more audio to left or right and requires messing with it to get balanced audio.
Feb 27, 2024 5:26 PM
147 Comments
Joined Oct 2017
LovePotion9Feb 27, 2024 5:26 PM
147 Comments
This amp has known issues with left or right channel imbalance sound. Bought one a while back when it was on sale for $50. RMA first one, the second one have a stuck volume knob. It just POS.
Feb 27, 2024 5:26 PM
58 Comments
Joined Aug 2015
allfin4Feb 27, 2024 5:26 PM
58 Comments
Quote from nightanole :
Id give the nod to the liquid spark. If if went with schiit, id want the Magni+ so its DC direct. But remember the schiit amp is now discontinued, and schiit isnt known for quality or good RMA process.
All fair points, thank you
Feb 27, 2024 5:29 PM
91 Comments
Joined Jan 2018
JackRCoxFeb 27, 2024 5:29 PM
91 Comments
This is a solid deal for a great "budget" amp. I use budget in quotes because it would cost a lot more money achieve an upgrade. Pair this with a inexpensive Topping or SMSL DAC and you'll have a desktop headphone setup that will sound fantastic.
Feb 27, 2024 5:35 PM
979 Comments
Joined Nov 2011
DonutsForDBagsFeb 27, 2024 5:35 PM
979 Comments
Wait! Is that THE Alex Cavelli!?

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Feb 27, 2024 6:09 PM
4.2K Comments
Joined Mar 2006
nightanoleFeb 27, 2024 6:09 PM
4.2K Comments
Quote from DonutsForDBags :
Wait! Is that THE Alex Cavelli!?
I guess. been making hobby amps since the early 2000's. Retired in the lat 2010's and has the stuff made by massdrop and monoprice now.
Feb 27, 2024 6:16 PM
7.2K Comments
Joined Aug 2010
rootbearFeb 27, 2024 6:16 PM
7.2K Comments
This looks like a TEAC one that I have been trying to sell.
Feb 27, 2024 10:30 PM
257 Comments
Joined Nov 2013
amnuvinFeb 27, 2024 10:30 PM
257 Comments
What's the best way to connect this to a computer so I can listen to flac files. I don't think my sound card had the right outputs
Feb 28, 2024 4:34 AM
413 Comments
Joined Jan 2023
Baytee2023Feb 28, 2024 4:34 AM
413 Comments
Will these work as a phonograph amp as well?
Feb 28, 2024 4:50 AM
1.1K Comments
Joined Aug 2014
aagstnFeb 28, 2024 4:50 AM
1.1K Comments
Quote from Baytee2023 :
Will these work as a phonograph amp as well?
No. You need a true phono preamp that can produce the RIAA curve needed to correctly reproduce the sound.
Feb 28, 2024 5:22 AM
370 Comments
Joined Jun 2007
New_GuyFeb 28, 2024 5:22 AM
370 Comments
Quote from amnuvin :
What's the best way to connect this to a computer so I can listen to flac files. I don't think my sound card had the right outputs
you want a 3.5mm to 2 RCA cable.
example
https://www.monoprice.com/product?p_id=5597
Feb 28, 2024 6:14 PM
85 Comments
Joined Oct 2017
OldBumFeb 28, 2024 6:14 PM
85 Comments
Quote from New_Guy :
you want a 3.5mm to 2 RCA cable.
example
https://www.monoprice.com/product?p_id=5597
You need a DAC. The computer signal goes to the DAC, typically via a USB connection, then the DAC connects to the amp using RCA interconnects.

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Feb 28, 2024 7:58 PM
7.5K Comments
Joined Dec 2006
big mikeFeb 28, 2024 7:58 PM
7.5K Comments
I have this, seems good but I'm still shopping for a better DAC to pair with it.

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