{"product_id":"pro-ject-tube-box-ds3-b-phono-preamp","title":"Pro-Ject - Tube Box DS3 B Phono Preamp","description":"\u003ch2\u003eHigh-End Tube Sound Quality\u003c\/h2\u003e\n\u003cp\u003eTube phono stages have been an integral part of Pro-Ject's product portfolio for many years. The latest Tube Box DS3 B adds balanced capability to the mix, making this their first\u003cspan\u003e \u003c\/span\u003eTrue Balanced\u003cspan\u003e \u003c\/span\u003etube phono preamp. The design benefits from an outstanding dual-mono circuit layout with discrete components assembled with expertise in Europe. It’s a hybrid design utilizing tubes in the input \u0026amp; gain stages. All electrical components (including the tube output stage) are audiophile-grade, merging to deliver breathtaking sound quality from your turntable \u0026amp; phono cartridge.\u003c\/p\u003e\n\u003ch2\u003eBalanced – It’s Almost Unbelievable\u003c\/h2\u003e\n\u003cp\u003eUse the 5-pin mini XLR or standard XLR inputs to recruit the balanced circuit in the Tube Box DS3 B. In each channel,\u003cspan\u003e \u003c\/span\u003ebalanced audio signals\u003cspan\u003e \u003c\/span\u003e(aka symmetrical) are comprised of hot and cold (or + \/ -) conductors carrying the same musical information but are inherently out of phase. The (-) signal is an inverted duplicate of the (+). Opposite polarities render them ‘different’ in the eyes of the balanced circuit. The balanced circuit is where\u003cspan\u003e \u003c\/span\u003ecommon-mode rejection\u003cspan\u003e \u003c\/span\u003eoccurs, canceling accrued noise that’s affected each the hot (+) and cold (-) signals (thus the noise is ‘common’ to them). Once the balanced circuit has canceled the ‘common’ noise, the cold (-) signal’s polarity is inverted to match hot (+) one. This amounts to more amplitude (about 6dB), and less noise (about 10dB). You can image the wealth of detail and clarity that surfaces in the absence of the aforementioned noise and with the added amplitude. The difference is not subtle, and once you’ve heard it, there’s no turning back. \u003c\/p\u003e\n\u003ch2\u003eTwo Turntable Inputs, Endless Cartridge Options\u003c\/h2\u003e\n\u003cp\u003eTwo turntables can be connected simultaneously to the Tube Box DS3 B! The electrical settings for each turntable are easily managed from the front panel and are stored in the memory bank. A range in gain of 40-65dB is at your fingertips. This allows you to cater to your cartridge’s output as well as to the overall level of your audio sources.\u003c\/p\u003e\n\u003cp\u003eLoad impedance (aka cartridge loading or input impedance) for MC cartridges is freely adjustable in the range of 10-1000 ohms. A system introduced to the audio industry by Pro-Ject, the potentiometer allows you to seamlessly adjust impedance during playback for on-the-spot evaluation. This is critical to finding the optimal impedance value for your cartridge as it performs in your system.\u003c\/p\u003e\n\u003ch2 class=\"yikes-custom-woo-tab-title yikes-custom-woo-tab-title-features\"\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBalanced XLR inputs \u0026amp; outputs\u003c\/li\u003e\n\u003cli\u003eBalanced mini XLR input\u003c\/li\u003e\n\u003cli\u003eContinuously variable cartridge loading\u003c\/li\u003e\n\u003cli\u003ePrecise RIAA equalization\u003c\/li\u003e\n\u003cli\u003eLow-noise, low-distortion circuitry\u003c\/li\u003e\n\u003cli\u003eMM \u0026amp; MC capable\u003c\/li\u003e\n\u003cli\u003eSingle-ended RCA inputs \u0026amp; outputs\u003c\/li\u003e\n\u003cli\u003eDual-mono design\u003c\/li\u003e\n\u003cli\u003eSubsonic filter\u003c\/li\u003e\n\u003cli\u003eAluminum chassis shields RF\/EMI\u003c\/li\u003e\n\u003cli\u003eAvailable in silver or black\u003c\/li\u003e\n\u003cli\u003eOptional magnetic wooden side panels\u003c\/li\u003e\n\u003cli\u003eMade in Europe\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"yikes-custom-woo-tab-title yikes-custom-woo-tab-title-specs\"\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTubes: 2x 6922\/E88CC\u003c\/li\u003e\n\u003cli\u003eInput impedance: variable 10-1000Ω\/ 47kΩ\u003c\/li\u003e\n\u003cli\u003eInput capacitance: 50pF, 150pF, 300pF, 400pF\u003c\/li\u003e\n\u003cli\u003eGain options: 40, 45, 50, 55, 60, 65dB\u003c\/li\u003e\n\u003cli\u003eOutput voltage (typical at 40dB): 500mV\/1kHz output at 5mV\/1kHz input\u003c\/li\u003e\n\u003cli\u003eSignal\/noise ratio (40dB): \u0026gt;92dBV; 102dBV (‘A’ weighted)\u003c\/li\u003e\n\u003cli\u003eSignal\/noise ratio (60dB): \u0026gt;78dBV; 87dBV (‘A’ weighted)\u003c\/li\u003e\n\u003cli\u003eTHD at 1 kHz: \u0026lt;0.003% (MM), \u0026lt;0.02% (MC)\u003c\/li\u003e\n\u003cli\u003eTHD (20Hz-20kHz): \u0026lt;0.005% (MM), \u0026lt;0.03% (MC)\u003c\/li\u003e\n\u003cli\u003eRIAA-equalization curve accuracy: 20Hz-20kHz (±0.5dB)\u003c\/li\u003e\n\u003cli\u003eSubsonic filter: at 20Hz with 18dB\/octave\u003c\/li\u003e\n\u003cli\u003eInputs: RCA, XLR, Mini XLR\u003c\/li\u003e\n\u003cli\u003eOutputs: RCA, XLR\u003c\/li\u003e\n\u003cli\u003eTrigger in\/out: 12V (2.5mm jack)\u003c\/li\u003e\n\u003cli\u003eXLR wiring: 1=ground, 2=hot, 3=cold\u003c\/li\u003e\n\u003cli\u003eOutboard power supply: 18V\/1000mA DC\u003c\/li\u003e\n\u003cli\u003ePower consumption: 18V max, 750mA DC, \u0026lt;0.5W in standby\u003c\/li\u003e\n\u003cli\u003eDimensions (WxHxD): 206 x 91 x 227mm\u003c\/li\u003e\n\u003cli\u003eDimensions (standard): 8.11 x 3.54 x 8.94”\u003c\/li\u003e\n\u003cli\u003eMass (weight): 1560g (3.44 lbs)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sumiko","offers":[{"title":"Black","offer_id":63812257153401,"sku":"9120129860284","price":329.7,"currency_code":"GBP","in_stock":true},{"title":"Silver","offer_id":63812257186169,"sku":null,"price":329.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1004\/7219\/3401\/files\/Tube-Box-DS3-B-Phono-Preamp-Silver_fbd76ba7-d6b5-4ec5-bbac-c1ad9997caf4.webp?v=1782098887","url":"https:\/\/noirvinyl.com\/products\/pro-ject-tube-box-ds3-b-phono-preamp","provider":"NOIR VINYL","version":"1.0","type":"link"}