We are not accepting orders at this time. Online ordering will resume Monday, May 28th at 9:45PM EDT. Our SuperStore and offices are currently closed and will reopen on Tuesday, May 29th at 9:00AM EDT.
We apologize for any inconvenience and appreciate your patronage.
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.
| 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 |
Displaying reviews 1-2
Pros
Cons
Best Uses
Comments about Samson S-phone - 4 Channel Headphone Amplifier:
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.
Pros
Cons
Best Uses
Comments about Samson S-phone - 4 Channel Headphone Amplifier:
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.
Displaying reviews 1-2