--- product_id: 292058821 title: "PRO-JECT TUBE BOX S2 UNI - BLACK" brand: "pro-ject" price: "3321 zł" currency: PLN in_stock: true reviews_count: 5 category: "Pro Ject" url: https://www.desertcart.pl/products/292058821-pro-ject-tube-box-s2-uni-black store_origin: PL region: Poland --- # Replaceable ECC83 tubes for customizable sound Front subsonic filter & gain control for perfect tuning Dual mono circuitry for pristine channel separation PRO-JECT TUBE BOX S2 UNI - BLACK **Brand:** pro-ject **Price:** 3321 zł **Availability:** ✅ In Stock ## Summary > 🎵 Elevate your vinyl experience with tube-powered precision and style! ## Quick Answers - **What is this?** PRO-JECT TUBE BOX S2 UNI - BLACK by pro-ject - **How much does it cost?** 3321 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/292058821-pro-ject-tube-box-s2-uni-black) ## Best For - pro-ject enthusiasts ## Why This Product - Trusted pro-ject brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Tailor Your Tone:** Replaceable ECC83 tubes let you shape your sound signature with ease. - • **Precision Control:** Front-panel gain and subsonic filter buttons for on-the-fly sound optimization. - • **Pure Analog Bliss:** Fully discrete circuit design without OpAmps delivers lush, warm, and natural audio. - • **Universal Compatibility:** Supports both MM and MC cartridges with 5 variable input impedance settings. - • **Vibration & EMI Shielding:** Robust aluminum casing protects your sound from interference and vibrations. ## Overview The PRO-JECT TUBE BOX S2 UNI is a compact, high-end phono preamplifier featuring dual mono circuitry and replaceable ECC83 tubes for customizable, ultra-low noise analog sound. Designed for both MM and MC cartridges, it offers multiple gain and impedance settings, a front subsonic filter, and a durable aluminum casing that minimizes vibrations and electromagnetic interference, delivering rich, warm, and detailed audio in a sleek, vibration-resistant package. ## Description Innovative miniature sized phono preamplifier with tube output and high end sound! Tube Box S2 is our very first product to feature a fully discreet circuit design without using any operational amplifiers (OpAmps). It also is the first product to come with replaceable tubes for tube rolling and sound-shaping. This gives the customer many options to pick from and alter the sound signature to his preference. Tube Box S2 will give a full and relaxed laid back sound with lush mids, just like you would expect it from a much bigger high end tube phono pre-amplifier. It offers support for both MM and MC cartridges and comes with many gain settings to be switched on the front panel. Five variable input impedance settings are available to adjust to any MM cartridge, the 47k ohms input impedance setting is fixed and suited for high output MC cartridges. The aluminium/metal casing is adapted to our DS2 line in looks and protects against vibrations and electromagnetic interferences for superior sound. Review: Dit is toch echt onwaarschijnlijk goed voor het geld. Enorm vol en zuiver geluid, muzikaal en vol emotie. Ca 15 uur er op zitten bij deze review. Dit is alles wat ik er van hoopte dat het zou doen. Review: Avendo la necessità di un pre phono da accoppiare al mio Thorents TD166 MK2 ho cercato in rete un prodotto di livello alto ma senza dover vendere un rene, diciamo che per un neofita 350€ possono sembrare molte, ma non lo sono considerato la resa, ho provato un Cambridge 551c è già ascoltanti dalle prime battute mi sono accorto della totale o quasi assenza di respiro e ariosita, cosa che prima con l’amplificatore avente pre incorporato aveva, quindi ho provato uno zen phono tanto elogiato, ho già un prodotto del marchio per la conversione MQA che trovo eccellente, ma anche questo non ha colpito il mio interesse dopo l’ascolto, un ragazzo mi ha consigliato di provare i pre del marchio projet e amando le valvole sono andato diretto su questo prodotto, nonostante le valvole che monta che a breve saranno sostituite con una coppia di Philips miniwatt, il risultato sono è eccellente, la possibilità di gestire il livello in ingresso e il filtro subsonico sono un valore aggiunto non da poco, lo consiglio caldamente ## Features - Suitable for MM and MC cartridges - 2x ECC83(12AX7) tubes (replaceable) - Front-sided Subsonic filter button & Gain control - Dual mono circuitry for optimized channel separation & Ultra low noise circuitry with FET input stage - Dimensions 103mm x 73mm x 131mm (with sockets) ; Weight 410g ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B075KPB1P2 | | Best Sellers Rank | #65,598 in Electronics ( See Top 100 in Electronics ) #19 in Home Audio Preamplifiers | | Brand Name | Pro-Ject | | Customer Reviews | 4.6 4.6 out of 5 stars (413) | | Item Weight | 2.12 Pounds | | Manufacturer | Pro-Ject Audio | | Maximum Supply Voltage | 18 Volts | | Model | Pro-Ject Tube Box S2 | | Mounting Type | Surface Mount | | Number of Channels | 2 | | Output Power | 10 Watts | | Specification Met | CE | ## Product Details - **Brand:** Pro-Ject - **Manufacturer:** Pro-Ject Audio - **Maximum supply voltage:** 18 Volts - **Mounting type:** Surface Mount - **Number of channels:** 2 ## Images ![PRO-JECT TUBE BOX S2 UNI - BLACK - Image 1](https://m.media-amazon.com/images/I/71-LwDsjtEL.jpg) ## Questions & Answers **Q: How come my tubes dont light up?** A: Thanks for your question. The tubes on the S2 do not light up. They have a very low glow that is barely perceptible. World Wide Stereo is 43 years old and a proud authorized Pro-Ject dealer. **Q: Can anyone tell me which dip switches should be on for an ortofon 2m blue cartridge? thanks! this is all new to me.** A: Thanks for your question. Using the included owners manual as a guide, for a 2M Blue:: 1-off, 2-on, 3-off, 4 -8 are off. World Wide Stereo - since 1979 - and a proud authorized Pro-Ject dealer. **Q: can you roll the tubes?** A: Yes, you can. **Q: Anyone recommend dip switch settings for sumiko rainer mm cartridge?** A: Thanks for your question. The Sumiko Rainer cartridge specifications state Load Impedance: 47kOhms, Recommended Load Capacitance: 100pF to 200pF, and Output Voltage: 5.0mV. Set input impedance at default 47k, Capacitance at 150pF. Set Input gain at the recommended 43dB. The Tube Box S2 owners manual details the 8 dip switch settings. World Wide Stereo is 42 years old and a proud authorized Pro-Ject dealer. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by T***S on 28 June 2024* Dit is toch echt onwaarschijnlijk goed voor het geld. Enorm vol en zuiver geluid, muzikaal en vol emotie. Ca 15 uur er op zitten bij deze review. Dit is alles wat ik er van hoopte dat het zou doen. ### ⭐⭐⭐⭐⭐ Review *by C***O on 26 May 2023* Avendo la necessità di un pre phono da accoppiare al mio Thorents TD166 MK2 ho cercato in rete un prodotto di livello alto ma senza dover vendere un rene, diciamo che per un neofita 350€ possono sembrare molte, ma non lo sono considerato la resa, ho provato un Cambridge 551c è già ascoltanti dalle prime battute mi sono accorto della totale o quasi assenza di respiro e ariosita, cosa che prima con l’amplificatore avente pre incorporato aveva, quindi ho provato uno zen phono tanto elogiato, ho già un prodotto del marchio per la conversione MQA che trovo eccellente, ma anche questo non ha colpito il mio interesse dopo l’ascolto, un ragazzo mi ha consigliato di provare i pre del marchio projet e amando le valvole sono andato diretto su questo prodotto, nonostante le valvole che monta che a breve saranno sostituite con una coppia di Philips miniwatt, il risultato sono è eccellente, la possibilità di gestire il livello in ingresso e il filtro subsonico sono un valore aggiunto non da poco, lo consiglio caldamente ### ⭐⭐⭐⭐⭐ Review *by A***R on 6 March 2025* Great warm sound! This phono amplifier improves the sound greatly, in addition to producing a warmer, more ”natural” sound it also improves detail and soundstage. Recommended! ## Frequently Bought Together - Pro-Ject Tube Box S2 Pure-Tube MM/MC Phono Preamplifier (Black) - Primeda Auidophile 2RCA Male to 2RCA Male Stereo Audio Cable,Gold Plated | 4N Oxgen-Free Copper Core (3 Feet (1M)) - Monoprice 1.5ft Premium 2 RCA Plug/2 RCA Plug M/M 22AWG Cable - Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/292058821-pro-ject-tube-box-s2-uni-black](https://www.desertcart.pl/products/292058821-pro-ject-tube-box-s2-uni-black) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-01*