Can I connect this preamp to passive speakers?

No, this preamp can only be connected to active speakers or amplifiers.

What type of headphones can I use with this amplifier?

You can use ordinary 3.5mm headphones with the headphone amplifier output.

What power supply does this preamp require?

The preamp operates on an AC voltage of 110 V - 240 V.

I can connect my headphone but i can't control the volume. Is it normal ?

Yes, it's only meant to be a connection between amps. I use the headphone output to my Mackie Big Knob volume controller.

How do I control the volume with this preamp? Is there a remote control I have to buy?

There's no volume control on the Boxx1 unfortunately.

Can I plug my audio technia atlp. 60x into this preamp as a better choice than the onboard preamp, then plug into my onkyo home cinema receiver?

Depends if the receiver has the option of bypassing the onboard preamp with a separate input.

I have a fosi x2 and a douk st-01. I need a headphone socket. Can I add an x1 before the x2? Or between the x2 and st-01? Or should I use y cables?

You don't need to add an X1 before X2. You can connect the audio source to the 3.5mm aux input of the BOX X2 and the RCA output of the BOX X2 to the RCA input of the st-01. You need an RCA to RCA cable for this connection. Thank you for your support!

Can the output from the x2 tube preamp be fed into a nad d7050amp via a digital conval input convertor, which is the only way of inputting a tu

I don't know what you mean. Take the phono lead into the record player, attach the other end to the preamp input, get another phono lead, connect to the output of the preamp, then connect the other end to the amp input. Hope this helps.

Hello, I have a numark deck and I want to record 78's and 45's to mp3 files using a computer. Will this machine allow me to hear the records whilst rec

Yes, but you'll have to put the output from the pre-amp to the line-in on the computer and also to the amp powering the speakers.

Purchased this preamp around a month ago, question is what would be the benefit of changing the valves? Would it be louder, clearer, more bass or mid?

A matched pair of 5654W vacuum tubes will give a much improved sound clarity. You can get these from Riverstone Audio, check eBay.

So presumably I plug the turntable in this amp then plug straight into my Sonos 5?

Your turntable is plugged into the Fosi Audio X1 which needs to be plugged into a normal amplifier to get good volume. Regards, Lawrie Lyons happy Fosi Audio X1 user.

I have a CD/radio player with an auxiliary input. Can I connect a turntable through this and into my player?

Yes, that's exactly how I use it. Adjust the volume on your CD/radio as required.

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Fosi Audio

Fosi Audio Box X4 Phono Preamp with JAN 5654W Vacuum Tubes for MM Turntable Phonograph Record Player with Volume Bass Treble Control

Item #:37770995

4.7 rating

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PKR 32931

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Enjoy Hi-Fi music with Fosi Audio products, designed for a softer, clearer, and warmer sound experience.

Product Details

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Features & Benefits

Experience soft, clear, and warm sound with Fosi Audio products.
Equipped with MM turntable and 3.5mm AUX inputs for versatile connectivity.
Enhanced playability with treble and bass independent gain control.
Utilizes 5654 vacuum tubes for a natural acoustic sound.
Compatible with a range of audio devices including active speakers and amplifiers.
High customer ratings, proving quality and satisfaction.

Product Description

Overview

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Customer Questions & Answers

Question : Can I connect this preamp to passive speakers?
Answer : No, this preamp can only be connected to active speakers or amplifiers.
Question : What type of headphones can I use with this amplifier?
Answer : You can use ordinary 3.5mm headphones with the headphone amplifier output.
Question : What power supply does this preamp require?
Answer : The preamp operates on an AC voltage of 110 V - 240 V.
Question : I can connect my headphone but i can't control the volume. Is it normal ?
Answer : Yes, it's only meant to be a connection between amps. I use the headphone output to my Mackie Big Knob volume controller.
Question : How do I control the volume with this preamp? Is there a remote control I have to buy?
Answer : There's no volume control on the Boxx1 unfortunately.
Question : Can I plug my audio technia atlp. 60x into this preamp as a better choice than the onboard preamp, then plug into my onkyo home cinema receiver?
Answer : Depends if the receiver has the option of bypassing the onboard preamp with a separate input.
Question : I have a fosi x2 and a douk st-01. I need a headphone socket. Can I add an x1 before the x2? Or between the x2 and st-01? Or should I use y cables?
Answer : You don't need to add an X1 before X2. You can connect the audio source to the 3.5mm aux input of the BOX X2 and the RCA output of the BOX X2 to the RCA input of the st-01. You need an RCA to RCA cable for this connection. Thank you for your support!
Question : Can the output from the x2 tube preamp be fed into a nad d7050amp via a digital conval input convertor, which is the only way of inputting a tu
Answer : I don't know what you mean. Take the phono lead into the record player, attach the other end to the preamp input, get another phono lead, connect to the output of the preamp, then connect the other end to the amp input. Hope this helps.
Question : Hello, I have a numark deck and I want to record 78's and 45's to mp3 files using a computer. Will this machine allow me to hear the records whilst rec
Answer : Yes, but you'll have to put the output from the pre-amp to the line-in on the computer and also to the amp powering the speakers.
Question : Purchased this preamp around a month ago, question is what would be the benefit of changing the valves? Would it be louder, clearer, more bass or mid?
Answer : A matched pair of 5654W vacuum tubes will give a much improved sound clarity. You can get these from Riverstone Audio, check eBay.
Question : So presumably I plug the turntable in this amp then plug straight into my Sonos 5?
Answer : Your turntable is plugged into the Fosi Audio X1 which needs to be plugged into a normal amplifier to get good volume. Regards, Lawrie Lyons happy Fosi Audio X1 user.
Question : I have a CD/radio player with an auxiliary input. Can I connect a turntable through this and into my player?
Answer : Yes, that's exactly how I use it. Adjust the volume on your CD/radio as required.

Customer Ratings

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Fosi Audio Box X4 Phono Preamp with JAN 5654W Vacuum Tubes for MM Turntable Phonograph Record Player with Volume Bass Treble Control

The Fosi Audio Box X4 Phono Preamp with JAN 5654W Vacuum Tubes for MM Turntable Phonograph Record Player with Volume Bass Treble Control is a great entry-level preamp for vinyl enthusiasts who want to get more control over their sound experience. This preamp does an excellent job of amplifying the sound from a turntable, and the treble and bass controls can fine-tune the sound precisely to suit the listener's taste. It's also versatile enough to work with most speaker systems if used correctly. However, some users have found that the sound quality isn't as detailed as they would like or that there are issues with the product, such as unwanted noise or a low output. Despite this, the majority of customers feel that the Fosi Audio Box X4 is a well-built, affordable preamp option that they're happy to have added to their setup.

Pros

Affordable
Well-built
Versatile for use with various speaker systems
Treble and bass controls offer more customization for sound

Cons

Sound quality may not be as detailed as some users would like
Headphone output doesn't mute the line-out speakers when in use.

Important Information

Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

Fosi Audio Box X4 Phono Preamp with JAN 5654W Vacuum Tubes for MM Turntable Phonograph Record Player with Volume Bass Treble Control

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