{"product_id":"pro-ject-tube-box-s2","title":"Pro-Ject Tube Box S2 Tube Phono Preamplifier","description":"\u003cp dir=\"auto\"\u003eFully Discrete Circuit · Replaceable Vacuum Tubes · Warm Musicality · Entry-Level Tube Flagship\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe Pro-Ject Tube Box S2 is the brand's first fully discrete (op-amp-free) tube phono preamplifier, featuring two replaceable ECC83 (12AX7) vacuum tubes, delivering a rich, warm, and relaxed sound signature. It supports MM and MC cartridges and offers front panel gain and subsonic filter controls, as well as extensive load adjustments, making it almost perfectly compatible with most cartridges on the market.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eCompact and exquisite, with a sound rich in tube charm, it is an ideal entry-level high-end choice for those who want to experience true tube sound quality.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eProduct Basic Information\u003c\/h3\u003e\n\u003cul dir=\"auto\"\u003e\n\n\u003cli\u003eType: Tube MM \/ MC Phono Preamplifier\u003c\/li\u003e\n\n\u003cli\u003eTubes: 2 × ECC83 (12AX7A), replaceable (supports tube rolling)\u003c\/li\u003e\n\n\u003cli\u003eSupported Cartridges: MM (Moving Magnet) and MC (Moving Coil)\u003c\/li\u003e\n\n\u003cli\u003eAdjustments: Front panel gain and subsonic filter; bottom DIP switch for load adjustment\u003c\/li\u003e\n\n\u003cli\u003eOutput: RCA Line Level Output\u003c\/li\u003e\n\n\u003cli\u003eColor: Black or Silver\u003c\/li\u003e\n\n\u003cli\u003eOrigin: Hand-made in Europe\u003c\/li\u003e\n\n\u003cli\u003eAccessories: External 18V DC power supply\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003eCore Technology Highlights\u003c\/h3\u003e\n\u003cul dir=\"auto\"\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eFully Discrete Circuit Design\u003c\/strong\u003e: No Op-Amps used at all, resulting in a more natural and pure sound\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eReplaceable Vacuum Tubes\u003c\/strong\u003e: Supports tube rolling, allowing users to customize the sound character to their preference\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eHybrid Architecture\u003c\/strong\u003e: FET input stage + tube gain stage, balancing low noise and tube warmth\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eDual Mono Design\u003c\/strong\u003e: Excellent channel separation and soundstage performance\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eAccurate RIAA Equalization\u003c\/strong\u003e: Passive\/active two-stage equalization, with a maximum deviation of only 0.4dB\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eFront Panel Control\u003c\/strong\u003e: One-button operation for gain switching and subsonic filtering\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eAdjustable Input Impedance and Capacitance\u003c\/strong\u003e: 10 \/ 100 \/ 1k \/ 2kΩ, etc.; multiple capacitance options\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eAluminum\/Metal Sandwich Chassis\u003c\/strong\u003e: Effectively shields against electromagnetic interference and vibration\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eHigh-Quality Power Filtering\u003c\/strong\u003e: Independent high-voltage anode power supply to reduce interference\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003eDetailed Specifications\u003c\/h3\u003e\n\u003cul dir=\"auto\"\u003e\n\n\u003cli\u003eTubes: 2 × ECC83 (12AX7A)\u003c\/li\u003e\n\n\u003cli\u003eInput Impedance: 10Ω \/ 100Ω \/ 1kΩ \/ 2kΩ (also fixed 47kΩ)\u003c\/li\u003e\n\n\u003cli\u003eInput Capacitance: 47 \/ 147 \/ 267 \/ 367 \/ 487 \/ 587 pF\u003c\/li\u003e\n\n\u003cli\u003eGain: 40 \/ 43 \/ 50 \/ 60 \/ 63 dB\u003c\/li\u003e\n\n\u003cli\u003eSignal-to-Noise Ratio: Approx. 75–80 dB (A-weighted)\u003c\/li\u003e\n\n\u003cli\u003eTotal Harmonic Distortion: \u0026lt;0.02%–0.05%\u003c\/li\u003e\n\n\u003cli\u003eRIAA Accuracy: 20Hz–20kHz \/ max. ±0.4dB\u003c\/li\u003e\n\n\u003cli\u003eSubsonic Filter: 20Hz \/ 18dB\/octave\u003c\/li\u003e\n\n\u003cli\u003eInput \/ Output: 1 set of RCA each\u003c\/li\u003e\n\n\u003cli\u003ePower: External 18V \/ 1000mA DC\u003c\/li\u003e\n\n\u003cli\u003ePower Consumption: Approx. 470mA (standby \u0026lt;1W)\u003c\/li\u003e\n\n\u003cli\u003eDimensions: 103 × 73 × 131 mm\u003c\/li\u003e\n\n\u003cli\u003eWeight: Approx. 410g (without power supply)\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003eSound Performance and Characteristics\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThe Tube Box S2 delivers the warm, rich, and relaxed sound typical of tube phono stages. The mid-range is particularly smooth and full-bodied, with excellent vocal and instrument textures, and an open and spacious soundstage with stable, uncompressed dynamics. The background is relatively quiet, with sufficient detail, presenting an overall easy-listening, enduring, and musical performance.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe replaceable vacuum tubes allow users to further fine-tune the sound character, making it a highly attractive choice for entry-level tube systems.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eOnline Reviews\u003c\/h3\u003e\n\u003cul dir=\"auto\"\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eUsers and Media\u003c\/strong\u003e: Warm and rich sound, excellent mid-range, good dynamics and spaciousness, a \"true tube phono stage.\"\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eReviews\u003c\/strong\u003e: Good performance out of the box, supports tube rolling, high cost-effectiveness, suitable for users who want to experience tube warmth.\u003c\/li\u003e\n\n\u003cli\u003eSeveral reviewers praise its \"compact size yet full of tube charm,\" significantly enhancing the musicality of a vinyl system.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Pro-Ject","offers":[{"title":"銀","offer_id":48334852227290,"sku":null,"price":5160.0,"currency_code":"HKD","in_stock":true},{"title":"Black","offer_id":48334852260058,"sku":null,"price":5160.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0828\/3003\/3114\/files\/Pro-Ject_Tube_Box_S2.jpg?v=1786600238","url":"https:\/\/newgenaudio.shop\/en\/products\/pro-ject-tube-box-s2","provider":"NewGen Audio HK","version":"1.0","type":"link"}