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Product Description
Tube MM Phono Preamplifier
Our Story
Fosi Audio was founded with a simple goal: Build products that sound great and make people want to listen to music every day. We design, manufacture, and sell many Hi-Fi audio products on the market. We pursue your perfect music journey. Enjoy Hi-Fi music with Fosi Audio audio products!
Tube MM Phono Preamplifier/Tube Preamp
Product Parameters:
Power Adapter Output: 12V/1.5A
Product Adapter Input Voltage Range: AC 110V – 240V
Box X2 Phono Preamp DC Input Voltage: 12V
Output Voltage Level: 600 Mv @3mV 1kHz
SNR ≥ 98dB
THD ≤ 0.1%
Frequency Response: Standard RIAA
Product Weight: 0.66 lb/300g
Product Dimensions: 4.66 inch/3.85 inch/1.29 inch
2 Channel Power Amp: BT10A, BT20A, TB10A, TB10D, V1.0B, V1.0G, TDA7498E, ZK-1002, ZK-502T.
2.1 Channel Power Amp: BT30D, BT30D Pro, BL20A, BL20C, ZK-TB21.
DAC: Q4, K5 Pro, DS1, DS2. DAC Amplifier: PH04, DA2120A, DA2120C.
Subwoofer Amp: TP-02, M01-BT, M02, M03, M04.
Phono Preamp: BOX X1, BOX X2, BOX X3, BOX X4. Tube Preamp: P1.
Tube Headphone Amplifier: T20, T20X, P2.
Class AB Amplifier: T3.
Tube Preamplifier
Audiophile-grade amplification modules offer outstanding performance with their Low-Noise Audio Operational Preamplifiers. It’s also a tube preamp with 3.5mm AUX Input. Designed and assembled by Fosi Audio from high-quality components.
Gain Adjustment
Three switchable gain modes: 39, 42, 45 dB. Adjustable gain levels to give you customizable control and outstanding compatibility. Entry-Level high-end analog sound and top-notch circuitry for an unbeatable low cost.
MM Turntable Preamp
Suitable for moving-magnet (MM) cartridges. Precise RIAA equalization. Consistent sonic performance, super low noise. This mini preamp has stereo RCA inputs and stereo RCA outputs Connect the turntable to the RCA inputs and ground.
12V/1.5A Power Adapter
The power supply has performances such as short-circuit protection and overload protection. And effectively reduce the impact of AC input.
Replaceable Vacuum Tubes
Applicable vacuum tube model: 6K4/6J1/6J4/GE5654/6AK5/66*In vacuum tubes, etc.
FREE RCA Cable
Fosi Audio Box X2 preamp comes with a FREE RCA cable. Unbeatable low cost for a home audio phonograph preamp.
In order to fix the issue you may have more effectively, here are some tips:
–What to do if pre-amp not working?
1. All cables are securely in place and correctly connected.
2. Try a different power adapter.
3. Make sure that the turntable has a Phono output with an MM cartridge. Some turntables have a built-in phono preamplifier, set it to a Phono switch.
4. Feed the turntable’s output to the “MM input” of the preamp.
5. Check if the audio source, preamp, amplifier, or powered speakers all are turned on and in working mode.
6. If it is a tube phono preamp, check the seating of the tubes and swap them out with other working tubes.
7. Replace with the high-quality cable.
8. If it supports multiple inputs and outputs, try others to see if it is working.
–About sound issues or not working properly:
1. Make sure all the cables are fully connected.
2. Adjust the treble and bass control of the power amplifier to achieve the right tone.
3. Please try to change the sound source and cables to test.
Customer Reviews
4.3 out of 5 stars
1,225
4.6 out of 5 stars
2,561
4.3 out of 5 stars
116
4.1 out of 5 stars
641
4.3 out of 5 stars
162
4.5 out of 5 stars
631
Price
$31.99$31.99
$55.99$55.99
$63.99$63.99
$63.99$63.99
$63.99$63.99
$71.99$71.99
Type
Phono Preamp
Phono Preamp with Vacumm Tubes
Phono Preamp with Vacumm Tubes
Phono Preamp with Vacumm Tubes
Headphone Amp +Preamp
2.0 CH Amp
MAX Power Output
Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers.
Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers.
Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers.
Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers.
Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers.
300W x 2
Input
RCA
RCA+3.5mm AUX
Bluetooth + AUX + RCA
RCA+3.5mm AUX
Bluetooth + RCA
RCA
Output
Active Speakers + Headphone
Active Speakers
Active speakers
RCA+3.5mm AUX
RCA + 3.5mm Headphone + AUX
Passive Speakers+Pre-Out
Treble & Bass Control
x
x
✓
✓
✓
x
THD
≤ 0.08%
≤ 0.1%
≤0.1%
≤0.1%
≤ 0.02%
<0.003%
SNR
≥ 70dB
≥ 98dB
≥70dB
≥70dB
≥103dB
≥110dB
Terminating Impedance
–
–
–
–
–
2-8 Ohm
Power Adapter
12V/1.5A
12V/1.5A
12V/1.5A
12V/1.5A
12V/1.5A
32V/5A
Work Voltage
AC 110V – 240V
AC 110V – 240V
AC 100V – 240V/ DC 12V
AC 110V – 240V
AC 110V – 240V
AC 110V – 240V
❤Tube MM Phono Preamplifier: Converts phono signals to Line Level Signals with low-noise integrated circuits and high-quality components to remove low-frequency noise and ensure clear sound quality. Designed with a grounding post to protect your turntable.
❤Three switchable gain modes: 39, 42, and 45 dB. Adjustable gain levels to give you customizable control and outstanding compatibility. Entry-Level high-end analog sound and top-notch circuitry for an unbeatable low cost.
❤Tube Preamplifier: It’s also a tube preamp with 3.5mm AUX Input. Designed and assembled by Fosi Audio from high-quality components. Great warm, smooth-sounding.
❤Applicable vacuum tube model: 6K4/6J1/6J4/GE5654/6AK5/66*In vacuum tubes, etc. You can replace the vacuum tubes to DIY your stereo system. Different tubes with different sounds.
❤What You Get: Box X2 phono preamp x1, Vacuum tubes x2, RCA cable x1, power adaptor x1, user manual x1, our worry-free 24-month warranty, and friendly customer service. [Please note that it’s NOT for the MC turntable.]
Price effective as of Jul 17, 2024 21:17:57 UTC
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