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Icon Pro Audio SpaceMon Precision Headphone Amplifier

BH #ICSPACEMON • MFR #SPACEMON
1 review
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Icon Pro Audio SpaceMon Precision Headphone Amplifier
Key Features
  • Reference-Quality Headphone Amplifier
  • Expansive, Detailed Sound
  • Versatile Connectivity
  • Dedicated Power Adapter
Designed for professionals who rely on accurate monitoring to make critical audio decisions, the iCON Pro Audio SpaceMon is a single-channel, high-fidelity headphone amplifier well suited for mixing, tracking vocals, fine-tuning mic placement, or simply enjoying music at its best. The SpaceMon provides professional-grade headphone monitoring for studios and critical listening, delivering clarity, depth, and precision.
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$139.99
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Icon Pro Audio SpaceMon Overview

Designed for professionals who rely on accurate monitoring to make critical audio decisions, the iCON Pro Audio SpaceMon is a single-channel, high-fidelity headphone amplifier well suited for mixing, tracking vocals, fine-tuning mic placement, or simply enjoying music at its best. The SpaceMon provides professional-grade headphone monitoring for studios and critical listening, delivering clarity, depth, and precision.

With flexible connectivity options and enough clean power to drive any set of headphones (including high-impedance models), SpaceMon adapts seamlessly to studio and mobile environments alike. Its compact, rugged design is built to withstand daily use, while its near-zero output impedance ensures a neutral, transparent signal with no unwanted coloration.

Benefits
  • 24V reference-quality headphone amplifier
  • Expansive, extremely detailed sound quality enables you to maximize your headphone experience
  • Dedicated power adapter
  • Extremely versatile connectivity (connect to audio interfaces, mixing consoles, CD players, phones, etc.)
  • High-grade balanced left and right XLR-1/4" TRS combo inputs (+4 dBu)
  • High-grade unbalanced left and right lotus RCA inputs (-10 dBV)
  • Stereo 3.5mm connector calibrated for phones, cameras, etc.
Additional Details
  • 1/4" high-grade TRS headphone jack connector
  • Three buttons to choose between sources (illuminated when chosen)
  • Precision potentiometer facilitates exacting level control
  • High dynamic range (117 dBA)
  • Output impedance close to zero, (0.01 ohm at 1 kHz) providing excellent signal conversion quality for headphones
  • Capable of driving any headphone set available, supporting impedance levels up to 600 ohms
  • Rugged construction with all metal body
  • Extremely high grade, electroplated finish

Icon Pro Audio SpaceMon Specs

Key Specs
Number of Headphone Channels
Single Channel
Recommended Headphone Impedance
16 to 150 Ohms
Headphone Output Power
Up to 230 mW
Audio I/O
1/4" (Headphone)
XLR / 1/4" / 1/8" (3.5 mm) / RCA (I/O)
Digital Audio I/O
No
USB
No
Wireless
No
Power Requirements
AC/DC Power Adapter (Included), USB Bus Power
Form Factor
Tabletop
Number of Headphone Channels
Single Channel
Recommended Headphone Impedance
16 to 150 Ohms
Headphone Output Power
230 mW per Side into 16 Ohms (Typical)
175 mW per Side into 150 Ohms (Typical)
Digital Chipset
Not Specified by Manufacturer
EQ
No
Connectivity
Analog Audio I/O
1x 1/4" TRS Unbalanced Headphone Output
2x Combo XLR-1/4" TRS Balanced/Unbalanced Line Input (1 Stereo Pair)
1x 1/8" / 3.5 mm TRS Unbalanced Stereo Line Input
1x Stereo 2RCA Unbalanced Line Input
Digital Audio I/O
No
USB
No
Wireless
No
Performance
Frequency Response
10 Hz to 120 kHz ±0.2 dB
Gain/Trim Range
0 dB Up to +68 dB
Maximum Input Level
XLR Line Inputs:
22.8 dBu
RCA Line Inputs:
14.7 dBu
1/8" / 3.5 mm Line Inputs:
3.3 dBu
Maximum Output Level
16 dBu
Impedance
Headphone Outputs:
0.01 to 0.08 Ohm (0 dBu Input, 1 kHz)
THD+N
-100 dB
SNR
117 dB
Power
Power Requirements
AC/DC Power Adapter (Included), USB Bus Power
DC Input Power
24 VDC at 0.25A
AC/DC Power Adapter
100 to 240 VAC at 0.25 A (Included)
Physical
Dimensions
7.8 x 7.1 x 2" / 197.3 x 181 x 50 mm
Weight
2.2 lb / 1.0 kg
Packaging Info
Package Weight
3.115 lb
Box Dimensions (LxWxH)
9.7 x 9.4 x 3.1"

Icon Pro Audio SpaceMon Reviews

5 Stars!

By Dillon
Rated 5 out of 5
Date: 2026-02-02

Excellent performance and an outstanding value for the money — the best I’ve found at this low cost. It works best with low-impedance, high-sensitivity headphones, but remains very capable even with headphones that demand more power. It offers very low coloration, with a transparent and dynamic presentation that easily keeps up with the pace, rhythm, and timing of complex music. The Spacemon does not gloss over imperfections; instead, it clearly reveals flaws upstream, whether in source components (DACs, CD players) or in the recordings/media. In other words, to a large extent, it tells you the truth. Thanks to its thoughtful engineering and design — I even looked inside — it performs at a level well above its asking price. It is highly suitable for tracking, monitoring, and mixing at a serious/professional level, though it remains some distance away from the ultra-resolving rigs required for the highest tier of critical mastering. Well done, Icon Pro Audio! I am genuinely impressed.

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