Headphone amplifier with DAC

Earmen ST-Amp

5 reviews

AED 2,599

Product code: 131107

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Description

EarMan ST-Amp is a fully balanced desktop headphone amplifier with a preamp option and built-in DAC. It delivers exceptional sound quality, whether it is used with the built-in DAC or an external one, which is a priority for those who want to have everything in one device. The amplifier has protection against unpleasant pops and clicks when turning it on or off.

Features:

  • High output power
  • Preamp function
  • Built-in USB DAC
  • Ultra-low distortion

Balanced amplification even for a 6.3 mm output

The amplifier operates on a balanced circuit, which means the input signal becomes even cleaner and of higher quality. The same topology is used for the single 6.3 mm output, enabling balanced amplification without phase shift, additional noise, or distortions. Therefore, the sound from the 6.3 mm output is on par in terms of quality with the sound from the balanced output.

The headphone output is powered by two TPA6120 operational amplifiers, which have received high praise in the audiophile world. To ensure comprehensive amplification, the ST-Amp incorporates a high-quality balanced potentiometer from ALPS, which helps maintain consistent sound and ensures the satisfaction of the owner.

Sound capabilities

The ST-Amp does not influence the sound in a way that would enhance the distinctive character of your DAC. Although many DACs have excellent technical specifications, they alone are not enough for the sound to fully manifest itself. The ST-Amp utilizes the maximum potential of the dynamic range, revealing every detail of the audio source, so you won't miss a single nuance. Moreover, it effortlessly drives various headphones, thereby enhancing accuracy, neutrality, and transparency during listening.

The amplifier boasts high output power, providing 4V and 500mW into a 32-ohm load when connected to the SE output (6.3mm). With an impressive 7.75V and 1.85W into a 32-ohm load on the balanced output (4.4mm Pentaconn), it can easily drive even complex planar magnetic headphones.

Inputs RCA / USB - Output 6.3 mm

Input 6.3 mm - Balanced output Balanced input - Output 6.3 mm Balanced input - Balanced output

Input: 2V 2V 4V 4V

Output: 4V (0.5W at 32 Ohms) 7.75V (1.85W at 32 Ohms) 0.5V (0.5W at 32 Ohms) 7.756V (1.85W at 32 Ohms)

Distortions : 0.0025% 0.003% 0.0025% 0.002%

Signal-to-Noise Ratio: 117 dB 121 dB 118 dB 125 dB

Dynamic Range: 117.9 dB 121 dB 118 dB 125 dB

Dynamic Range

A dynamic range greater than 121 dB guarantees you a vibrant sound and musicality, allowing you to never feel like you're missing out on anything. With perfectly balanced sound and incredible dynamics, you'll feel like you're in a concert hall.

Preamp Function

On the device's rear panel, you'll find SE and BAL preamp outputs for balanced and unbalanced signals. This option allows you to use the ST-Amp as a DAC and preamp for a much more powerful system.

Ultra-Low Distortion

Low Total Harmonic Distortion (THD) is an important characteristic, and the engineers at EarMen take it very seriously. The ST-Amp has very low total harmonic distortion, allowing for increased power efficiency, reduced peak currents, and distortion-free operation.

Linear power supply with high efficiency

The amplifier features a noiseless linear power supply with high stability, allowing it to easily provide sufficient output power even for the most demanding headphones. In addition to the unique amplifier topology, the power supply has exceptional characteristics even at full power, which is often not the case with most amplifiers, so in their specifications, you may find measurements, but at half power.

Package includes:

  • amplifier
  • documentation

Characteristics

  • Brand
  • Power output
    1.85
  • The lowest frequency, Hz
    20
  • The highest frequency, kHz
    20
  • Sampling rate, kHz
    384
  • Signal-to-noise ratio, dB
    120
  • DSD support
    yes
  • Output connectors
    RCA, 4.4mm jack
  • Circuit design
    discrete
  • Preamplifier
    yes
  • Input connectors
    RCA, 4.4mm jack
  • DAC chip
    ES9280
  • DAC bit depth, bits
    32
  • Internal DAC
    yes
  • Color
  • Connecting to a computer via USB
    yes
  • Form factor
    stationary
  • Material
    aluminum
  • Playback via USB
    yes
  • Headphone output
    4.4mm jack, 6.35mm jack
  • Power, W
    1.85
  • Depth, mm
    170
  • Height, mm
    30
  • Width, mm
    150
  • Weight, g
    1100
  • Country of origin
    Serbia
  • Service life, months
    24
  • Warranty, months
    12
  • Show all characteristicsShow fewer characteristics

Reviews 5

Reviews

Ahmad yossef from Dubai26.07.2024
5
This amp is crazy good...drives both my planar and high impedance dynamic headphones with ease.Power is enough and I'm happy with sound quality for now, but it's never ending story, so looking forward to upgrade it after 2-3 years. Thanks to Dr.Head employees, the are great, very hospitable and experienced pros
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Product rating

5.0

(based on 5 reviews)
  • Sound
    5
  • Versatility
    5
  • Price/Quality
    0
  • 5
    100%
  • 4
    0%
  • 3
    0%
  • 2
    0%
  • 1
    0%

Earmen ST-Amp

5 reviews

AED 2,599