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General| Type | Headphone Amplifier |
|---|---|
| Form Factor | Desktop |
| Outputs | 2 x 1/4" TRS (headphones) |
| Power Supply | External power supply |
| Dimensions | 1.7" |
| Frequency Response | 10Hz |
External power supply must be 16-volt 0.3 amp DC. Check voltage setting for country.
Connector resembles CB microphone connector; ensure proper alignment before inserting.
Sums with main inputs post-level/mono; volume controlled by source.
Avoid placing near Wi-Fi routers to prevent RF signal pickup by high-gain circuitry.
Vulnerable to static; use de-stat in dry environments, discharge yourself.
Instructions for TRS/XLR to RCA adapter or cable wiring for balanced/unbalanced sources.
Little Labs MONOTOR™ source analyzing professional headphone amplifier.
Aims for professional monitoring at highest resolution for analytical listening.
Compares studio control rooms to mastering rooms for monitoring resolution.
Highlights contributions of legendary mastering engineers and custom electronics.
Current monitoring environments are often makeshift, imperfect, and lack resolution.
Professional headphone amps are neglected; offerings are often junk or flawed.
USB/Bluetooth powered devices are crippled by power conversion limitations.
Uses a single state-of-the-art active stage with straight-wire passive components.
Passive components selected for sonic neutrality: resistors, caps, decoupling caps.
Full voltage state-of-the-art super low noise internal linear regulation system.
Achieves high-resolution reference for evaluating audio in imperfect environments.
Sennheiser HD600 with Cardas cable is a reference pairing for high resolution.
Audeze LCD-X recommended; avoid super sensitive IEMs due to volume control limitations.
Thanks to individuals who assisted in product development.
Four headphone jacks (2x 3.5mm, 2x 1/4") fed by two separate stereo amps.
Selects stereo reverse, stereo, mono L+R, L only, R only, L-R for phase analysis.
Push switches bypass potentiometer sides for specific scenarios like using DAC level control.
3.5mm mini jack for phones or devices; sums post mono functions and volume control.
Inputs fed from line level sources like consoles, D/A converters; balanced but source can be unbalanced.
XLR/TRS combo jacks and TRS jacks are in parallel for multiple unit chaining.
XLR inputs accept line level sources; balanced or unbalanced sources can be monitored.
Two independent stereo headphone amps allow simultaneous listening for two people.
Switches bypass potentiometer sides for scenarios like using a DAC's level control.
Use mono L+R with cue mix on left, artist mic on right; bypass left level control.
Bypass switches are concealed to avoid accidental activation, useful for installations.
Function switch selects various stereo/mono modes and L-R phase analysis.
Multiple MONOTORS can be chained using TRS to TRS cables for in-line monitoring.
Stereo aux in can be fed from phones or devices for talkback or monitoring.
Client can monitor their phone music and compare mixes by plugging into aux in.
Talkback can use lavalier mics, wireless transmitters, or mini-headphone splitters.
Detailed input impedance measurements for balanced/unbalanced modes.
Specifies the low headphone output impedance as 0.5 Ω.
Measures crosstalk at 1kHz for balanced (>102dB) and un-balanced (>87dB) modes.
States the unit's gain is 13.8dB.
Disagrees with conclusions drawn from specs alone; emphasizes listening.
Encourages users to prioritize serious listening and comparison for purchasing decisions.
Leverages 40 years of experience in audio electronics design and manufacturing.
Uses minimum active circuitry for transparent signal path and pure source reproduction.
Discusses perceived L/R imbalance and analog pot tracking accuracy.
Explains power needs for headphones and compares to car engines.
Voltage gain is more critical than power output for driving headphones effectively.
Warns against using very sensitive IEMs due to limited volume control range.
Details flat response to 3Hz and intentional roll-off at higher frequencies.
Mono functions aid in checking azimuth on tape machines and phono cartridges.
Monotor remains balanced internally; no balanced-to-unbalanced buffers used.
High-quality components contribute to sonic performance and cost.
Emphasizes learning what sounds great through ears and experience, not just specs.
Encourages consumers to appreciate circuit design philosophy based on sound quality.
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