Samson S-phone - 4 Channel Headphone Amplifier

Samson S-phone - 4 Channel Headphone Amplifier

Samson S-phone - 4 Channel Headphone Amplifier

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Samson SA-SPHONE overview

  • 1Description

The S phone is a single rack space four channel headphone amplifier that allows for monitoring any stereo or monophonic source signal (balanced or unbalanced) over as many as twelve separate headphones, and is loaded with features that provide tremendous flexibility for monitor and cue mixing.

The master input features an input level and LED meter to control and display the overall stereo input. A master inject input allows for a secondary stereo source to be mixed in with the main input signal. Each of the S phone's four channels includes three headphone outputs (one on the front panel, two on the rear) with an overall volume control and individual level meters. A stereo auxiliary input is available on each channel so that individual line signals from direct or buss outputs can be mixed with the main stereo input on that channel. The balance control adjusts the ratio of the main and auxiliary signals or the left/right balance (based on the setting of the ST/2CH switch) so that each headphone mix can be further tailored for a particular listener's individual needs.

The S phone also features a two band equalizer on each of the four channels. Providing unusually high power levels and high audio fidelity, the unit is compatible with virtually all popular headphone models and can be used in a wide variety of applications, including recording studios, teaching labs, broadcast environments, and for live performance.

Four totally independent high-power stereo amplifiers in one rack space
Three headphone outputs - two rear, plus one front panel output per channel
Two master stereo inputs with balance control
Dual band equalizer on each channel
8 segment LED meter on each channel plus master
Auxiliary input with level control on each channel
Stereo or dual input mode and mute switches on each channel
Maximum output power on each channel regardless of headphone impedance
UPC: 809164001294
In the Box
Samson S-phone - 4 Channel Headphone Amplifier
  • AC Power Cable
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description

    Samson SA-SPHONE specs

    Number of Channels 4
    Input Connections 2 x 1/4" TRS phono Main Input (rear panel)
    1 x 1/4" TRS phono Master Inject (front panel)
    4 x 1/4" TRS phono Auxiliary Input (per channel, front panel)
    Output Connectors 4 x 1/4" TRS phono Headphone Outputs (front panel)
    8 x 1/4" TRS phono Headphone Outputs (rear panel)
    2 x 1/4" TRS phono Link Output (rear panel)
    Maximum Output Level 140 mW at 32 ohms, 385 mW at 66 ohms
    Function Controls 4 x Volume, balance, treble, bass rotary control
    1 x Input rotary control
    2 x Switches per channel (illuminated)
    Frequency Response 10Hz to 32kHz, +0/-3dB
    Distortion (THD) 0.008% typical @ +4dB, 1 kHz
    Noise >90dB, unweighted 22Hz to 22kHz
    Display 5 x 8 Segment LED (30 to Clip)
    Dimensions 19" x 8 1/2" x 1 3/4"
    Weight 5.5 lbs
    Specialties Link output which mirror the main inputs allow for multiple S phones to be linked together
    Packaging Info
    Package Weight 7.6 lb
    Box Dimensions (LxWxH) 23.3 x 11.0 x 4.6"

    Samson SA-SPHONE reviews

    S-phone - 4 Channel Headphone Amplifier is rated 4.5 out of 5 by 2.
    Rated 4 out of 5 by from Does exactly what it's supposed to do I use this for a group podcast and for music recording (home studio). For the podcast, the main inputs have a DVD audio signal coming in, and the inject input has the voice return from the podcast recorder. It works perfectly. The level balance between main input and inject can't be adjusted on this unit, though. (The mono aux-main feature is great, but only works with the individual channel aux inputs, not the front-panel inject - the inject is considered part of the main input as far as that goes) If you want control over the main/inject level balance, you have to take care of that from the sources. Low noise level, plenty of power to really crank the headphones if you need to. Solidly built.
    Date published: 2011-02-17
    Rated 5 out of 5 by from Terrrific Headphone amp Shortly after buying this rack mountable headphone amp I had the opportunity to use it while recording a group of 10 people singing a combination of group and solo vocals. The song was such that each line of the song was sung by a different individual or group of individuals making it more feasible, if possible, to lay the vocals down in a single take. After setting up the mikes and doing sound checks, I passed out 10 sets of headphones, one to each of the vocalists. The great thing about this headphone amp is the ability to take a Aux sned from my StudioLive board, one for each of the 4 headphone amps and mix it with the main music feed. This made it very easy to make a mix that put more me into each headphone, while still giving them some of the other vocalists and main music feed. In a single run through of the song, I was able to get the mixes for each of the performers to their satisfaction and we were ready to record. All the performers were impressed with the quality of the sound and appreciated not having to share a headset with a partner. The S-Phone has very clean amps that are plenty loud. Even when driving 3 headsets on one channel, I never have had the volume cranked on the S-Phone, as I am sure this would actually damage hearing with some of the headsets that I use. So far I have found no negative things to this great headphone amp.
    Date published: 2009-12-02
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