Feature
●【Share a Single Stereo Source】4 channel amplifier features 4 independent stereo high-power amplifier sections with separate volume knob for each of up to four outputs,which makes it possible for up to four people monitoring the mix for tracking,live uses and listen to the TV with earbuds while working out. Suitable for 15-150 Ohm headphones.
●【For Studio and Stage Applications or more 】Such an ultra-compact and portable design makes it very suitable for the studio or stage where multiple headphones are used at the same time.
●【Fantastic Stereo Quality】It is a mini headphone amplifier with 3.5mm (not 6.35mm)input/output that contributes to smoother connection of output and input,suitable for virtually all types of headphones , creating the highest Stereo audio Quality and eliminating the need for a 6.35 to 3.5mm adapter to connect the headphone power amplifier to the headphone.
●【Unique Compact design with switch】It is convenient for you to turn on/off the compact headphone power amplifier with a power switch anytime and anywhere,saving energy when enjoying high stereo audio quality.
●【What You Get】 Ultra low noise headphone amplifier*1 ，12V DC power adapter *1, Use manual*1, 24 Months Warranty for Fosi Audio Headphone amplifier. Please contact with us at any times if you have any problems.
Description
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4 Channel Headphone AmplifierFosi Audio PH04 is a 4 channel amplifier features 4 independent stereo high-power amplifier sections with separate volume knob for each output allowing flexible control for different headphones or speakers. |
Portable and Durable Metal ExteriorPortable and durable metal exterior, providing you with a comfortable and beautiful sound experience with a metallic feel. |
12V/1A Power AadapterEquipped with a 12V/1A power adapter, with overheat protection / overvoltage protection and other protection features, you do not have to worry about the use of headphone amplifiers in the process of easy to produce safety hazards. |
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| PH04 | Q4 | BOX X1 | BOX X2 | K5 PRO | BT30D PRO | |
| Customer Reviews |
419
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2,651
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3,600
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3,600
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576
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584
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| Price | £19.99 | £59.49 | £29.99 | £75.99 | £67.99 | £119.99 |
| Type | 4-Channel Headphone Amplifier | DAC+Headphone Amp | Phono Preamp | Phono Preamp with Vacumm Tubes | DAC+ Headphone Amp | Bluetooth 2.1 CH Amp |
| Input | 1/8’’ Headphone Jack | USB + Optical + Coaxial | RCA | RCA+3.5mm AUX | USB-C+OPT+COA+Microphone | Bluetooth + RCA |
| Output | 1/8’’ Headphone Jack | RCA + 3.5mm Headphone | Active Speakers + Headphone | Active Speakers | RCA + 3.5mm Headphone | Passive/Active Speakers+Subwoofer |
| Treble & Bass Control | ✓ | ✓ | ✓ | |||
| THD | - | 0.01% | ≤ 0.08% | ≤ 0.1% | <0.003% | ≤ 0.03% |
| SNR | - | ≥105dB | ≥ 70dB | ≥ 98dB | >110dB | ≥ 108dB |
| Terminating Impedance | 15-150Ohm | 16-200 Ohm | - | - | 16-300 Ohms | 2-8 Ohms |
| Power Adapter | 12V/1A | - | 12V/1A | 12V/1A | - | 32V/5A |
| Work Voltage | DC 12V-15V | DC 5V | AC 110V - 240V | AC 110V - 240V | USB-C/DC5V | AC 110V - 240V |
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| BT20A | BT20A-S | BT10A | BL20A | BT30D | DA2120C | |
| Customer Reviews |
8,430
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8,430
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4,087
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30
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2,788
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626
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| Price | £79.99 | £79.99 | £59.99 | £69.99 | £99.99 | £179.99 |
| Type | Bluetooth 2.0 CH Amp | Bluetooth 2.0 CH Amp | Bluetooth 2.0 CH Amp | Bluetooth 2.1 CH Amp with Remote Control | Bluetooth 2.1 CH Amp | Bluetooth DAC 2.1 CH Amp with Remote Control |
| Input | Bluetooth + RCA | Bluetooth + RCA | Bluetooth + 3.5mm AUX | Bluetooth + 3.5mm AUX + U-disk | Bluetooth + RCA | Bluetooth 5.0 + RCA + USB + Optical + Coaxial |
| Output | Passive Speakers | Passive Speakers | Passive Speakers | Passive Speakers + Active Speakers/Amplifier/Active Subwoofer | Passive Speakers+Active/Passive Subwoofer | Passive Speakers + Active Subwoofer |
| Treble & Bass Control | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| THD | ≤ 0.04% | ≤ 0.04% | ≤ 0.04% | ≤ 0.001% | ≤ 0.04% | ≤0.01% |
| SNR | ≥ 98dB | ≥ 98dB | ≥ 98dB | ≥ 92dB | ≥ 98dB | ≥110dB |
| Terminating Impedance | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm |
| Power Adapter | 24V/4.5A | 24V/4.5A | 19V/4.74A | 24V/4.5A | 24V/4.5A | 32V/5A |
| Work Voltage | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V |
| MAX Power Output | 100W x 2 | 100W x 2 | 50W x 2 | 100W x 2 | 50W x 2+100W | 120W x 2 |
