Fosi Audio BOX X2 Phono Preamp for Turntable Tube Preamplifier MM

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Fosi Audio Box X2 Phono Preamp for Turntable Preamplifier MM Phonograph Preamplifier with Gain Gear Mini Stereo Audio Hi-Fi Pre-Amplifier for Record Player with DC 12V Power Supply

Product Description

Features

• No More Hissy Vinyl: Crystal - Clear Signal Tired of low - frequency hum or fuzzy sound from your turntable? The BOX - X2 uses low - noise ICs and high - quality parts to convert weak phono signals to line - level, plus a grounding post to cut interference. Users say it “eliminates turntable buzz completely.”
• 3 Gain Modes for All MM Cartridges Struggle with mismatched gain for your turntable? Switch between 39/42/45 dB to fit most MM cartridges (works with Audio - Technica, Pro - Ject, etc.). Parts Express calls this “flexibility that beats budget preamps.”
• 2 - in - 1: Phono Preamp + Tube Preamp Need more than just a turntable boost? Use the 3.5mm AUX input to connect phones/CD players—enjoy warm, smooth tube sound for any audio source. Reviewers note it “adds richness to jazz and vocals without muddling details.”
• Easy DIY Sound Tweaks Want to customize sound without expertise? Swap vacuum tubes (2x 5725W included) for different tones—6J1 for brighter highs, GE5654 for warmer mids. Compatible with 6K4/6J4/6AK5, etc.

Parameter Details Input RCA (turntable) + 3.5mm AUX Output RCA (line - level) SNR ≥98dB (noiseless background) THD ≤0.1% (clean sound) Power 12V/1.5A adapter (AC 110V - 240V global use) Size 4.66×3.85×1.29 inches (0.66lb, fits desktops) Package Includes

• 1 x BOX - X2 Preamp
• 2 x 5725W Vacuum Tubes
• 1 x RCA Cable (no extra purchase)
• 1 x 12V/1.5A Power Adapter
• 1 x English Manual

Important Note This is a preamp (not an amplifier)—can’t connect to passive speakers directly. Pair with an amp (e.g., Fosi BT20A Pro) for passive speakers.
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