Fosi Audio Phono Preamp for Turntable Phonograph Preamplifier With Vacuum Tube Amplifier HiFi BOX X4

<div class="detailmodule_dynamic"><kse:widget data-widget-type="customText" id="1005000000920131" type="custom"></kse:widget></div><div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><div class="detailmodule_dynamic"></div><div class="detailmodule_dynamic"></div><div><div> </div><div><div><div><div><div><div><div><div><div><div><div><div><a href="https://www.aliexpress.com/item/1005004249797743.html" target="_self" class=""><img width="944" height="367" src="https://ae01.alicdn.com/kf/S381fc8aafe5f4ef99c32765118353cd6r.jpg" slate-data-type="image"/></a></div><div><br/></div><p><br/></p><p><strong><span style="font-size:24px">Fosi Audio Phono Preamp for Turntable Phonograph Preamplifier With Vacuum Tube Amplifier HiFi BOX X4</span></strong></p><div><br/><br/></div><p><span style="color:rgb(240, 10, 10);font-size:28px"><strong>Notice:</strong></span></p><div><br/></div><p><span style="color:rgb(240, 10, 10);font-size:26px"><strong>1.</strong></span><strong><span style="color:rgba(244,78,59,255);font-size:26px">The BOX X4 is currently equipped with a 6J1 vacuum tube.</span></strong></p><div><br/></div><p><span style="color:rgb(240, 10, 10);font-size:26px"><strong>2.BOX X4 is only a preamplifier, not amplifier, can not be connected with passive speakers directly, If you need connect BOX X3 with passive speakers, you need to connect it with an amplifier then connect the amplifier with your passive speakers.</strong></span></p><div><br/></div><p><strong><span style="font-size:22px">Features:</span></strong></p><div><br/></div><ul><li><p><span style="font-size:20px">1.

Tube MM Phono Preamplifier: The BOX X4 phono preamp supports 3.5MM AUX and MM turntable input, converting phono signals to Line Level with low-frequency noise removal using high-quality components and low-noise integrated circuits.

Protect your turntable with the grounding post feature</span></p></li></ul><div><br/></div><ul><li><div><br/><br/></div><p><span style="font-size:20px">2.Tube Headphone Amplifier &amp; Preamplifier: The Fosi Audio BOX X4&#x27;s versatile design includes a 3.5MM AUX headphone and RCA output, offering a range of usability beyond expectations</span></p></li></ul><div><br/></div><ul><li><div><br/><br/></div><p><span style="font-size:20px">3.Applicable Vacuum Tube Model: 6K4/6J1/6J4/GE5654/6AK5/66*In vacuum tubes, etc.

Achieve a customized stereo system by replacing vacuum tubes.

With different tubes producing unique sounds, it&#x27;s a DIY opportunity worth exploring</span></p></li></ul><div><br/></div><p><strong><span style="font-size:22px"><br/>Highlight:</span></strong></p><p><br/></p><ul><li><p><span style="font-size:20px">Model: BOX X4</span></p></li><li><p><span style="font-size:20px">Power Adapter Output: 12V</span></p></li><li><p><span style="font-size:20px">Product Adapter Input Voltage Range: AC 100V - 240V</span></p></li><li><p><span style="font-size:20px">Output Voltage Level: 1kHz and 650mV</span></p></li><li><p><span style="font-size:20px">SNR ≥ 70dB</span></p></li><li><p><span style="font-size:20px">THD ≤ 0.1%</span></p></li><li><p><span style="font-size:20px">Frequency Response: Standard RIAA</span></p></li><li><p><span style="font-size:20px">Product Weight: 0.71 lb/320g</span></p></li><li><p><span style="font-size:20px">Product Dimensions: 3.97x4.72x1.37 inch (10.09*12*3.5 cm)</span></p></li><li><p><span style="font-size:20px">Input Mode: MM turntable input +3.5mm AUX</span></p></li><li><p><span style="font-size:20px">Output Mode: RCA output + 3.5mm headphone output</span></p></li><li><p><span style="font-size:20px">Applicable headphone types: 16 Ω - 300 Ω</span></p></li></ul><p><span style="font-size:22px"><strong><br/>Package Include:</strong></span></p><p><br/><span style="font-size:20px">*Box X4 Phono Preamp x1</span></p><p><strong><span style="font-size:20px">*</span></strong><strong><span style="color:rgb(244, 78, 59);font-size:20px">6J1 Vacuum Tubes x2</span></strong></p><p><span style="font-size:20px">*12V Power Adaptor x1</span></p><p><span style="font-size:20px">*User Manual x1</span></p><div><br/><span style="font-size:26px"><strong>QA</strong></span></div><div> </div><p><span style="font-size:20px"><strong>Q1:Can the headphone and RCA outputs be used simultaneously?</strong></span><br/></p><p>Yes.

When both the 3.5mm headphone output and RCA output are connected, sound will be output through both the headphones and RCA connectors.</p><div> </div><div><div><div><div><p><span style="font-size:20px"><strong>Q2:Can the BOX X4 be used with an MC cartridge?</strong></span></p><p>NO.The BOX X4 is designed specifically for use with MM cartridges.