Previo Phono a válvulas Pro-Ject Tube Box DS. Espectacular previo de phono a válvulas de la marca Pro-Ject. Ajustable para cápsulas MM y MC. En perfecto estado de funcionamiento. Se vende con todos sus accesorios y con la caja original. Características:Tube assembly: 2x ECC83 (12AX7) Input impedance for low output MC: VARIABLE 10 ohms - 1000 ohms Capacitance (MM): 47pF / 147pF / 267pF / 367pF Gain MM / MC: 40 / 50 / 60 dB Signal-to-noise ratio: 93dBA THD: < 0,1% RIAA curve accuracy: within. 0,5dB/20Hz - 20kHz Subsonic filter: 20Hz @ 18dB/octave Input / Output: RCA Power supply: 18V/1000mA DC; 220 - 240V, 50Hz Power consumption: max 490mA DC / < 1 watt standby Dimension W x H x D (D with sockets): 103 x 72 x 144 (156)mm Weight: 1100g without power supply

This is an excellent sounding DAC. The exterior is in very good condition. As you may observe in one of the pictures, some pixels on the display are not displaying as brightly as others. Otherwise, I would probably describe this as near-mint condition. Pre Box S2 Digital Digital micro preamplifier with MQA and DSD512 support. A performance revolution in a small package! Pre Box S2 Digital marks a new era for our S-series components. For the very first time we are using a dual mono configuration with the highest class D/A converters of ESS Sabre. Their flagship DAC-chip ensures highest class audio in a small and affordable package. This DAC is capable of high resolution audio up to 32bit/768kHz PCM and DSD512! Pre Box S2 Digital is also the very first of our devices to support hardware MQA unfolding. It’s also the premiere of our proprietary Optimum transient digital filter and our proprietary clock circuitry design. Digital audio is the art of time, with our new proprietary clock design we have managed jitter rates of unrivalled 100 Femtoseconds, this easily outperforms many renowned and respected audiophile clock generators! MQA hardware decoding is only possible via the asynchronous USB input of Pre Box S2 Digital. With organic polymer capacitors and thin film miniMELF resistors we were able to create a tiny device that will blow away even much bigger components for a much higher price. With a total of eight digital filters the sound can be shaped precisely to the listeners liking. Pre Box S2 Digital is fully remoteable, it can also control the playback software of a computer. You can use Play, Pause, Forward and Rewind straight with your Pre Box S2 Digital! Features Dual mono construction High end ESS Sabre ESS9038 dual DAC Proprietary clock circuity design Organic polymer capacitors and thin film miniMELF resistors MQA hardware decoding DSD64, DSD128, DSD256 & DSD512 (DoP, DSD512 native) Up to 24bit/192kHz for optical & coax inputs 8 selectable digital filter characteristics 1 proprietary optimum transient digital filter Headphone output on the front (6.3mm) Synchronization of all internal oscillators Jitter as low as 100 Femtoseconds! Gold plated four layer PCB Technical Specifications Digital inputs 1x USB (B), 1x Co-axial (RCA), 1x Optical (TOSLink) D/A-converter 2x ESS9038Q2M 32-bit USB up to DSD512 (DSD1024), PCM up to 32b/768kHz Optical PCM up to 24b/192kHz Coaxial PCM up to 24b/192kHz Filter settings 7 different selectable on front Frequency response 20 Hz - 20 kHz Analogue outputs 6.3mm Headphone (front), 1x Variable Out (RCA Output voltage 2.05 Veff Minimal recommended headphone impedance 8 Ohm Headphone output power 6.6 mW / 600 Ohm; 68 mW / 32 Ohm THD 0.0003% @ 0 dB, 2V RMS, 1 kHz Dynamic range 124 dBA Outboard Power supply 5V/1A DC Dimensions W x H x D 103 x 37 x 122 mm (including knob and connectors)

Pro-ject Phono Box DS preamp preamplifier hifi vinyl turntable sound. Fantastic condition. Bought for a project but now changing the plan. Thanks for looking and happy bidding

Our precision Tube Box DS2 phono preamplifier benefits from outstanding circuitry design by the brilliant Czech engineer, Dr. Bohumil Sykora. Compatible with most MM & MC cartridges on the market, it offers two turntable inputs so enthusiasts can easily toggle between two different turntable/cartridge combos. Continuously adjustable (‘on-the-fly’) input impedance for low output MC cartridges is a must-have feature that allows you to ‘tune’ the loading to achieve the sonics that best suit your system and your ears. Other features include input capacitance for MM cartridges and a switchable subsonic filter to stave off mechanical noise. All components including the tube output stage and polypropylene capacitors are audiophile-grade and guarantee a breathtaking sonic experience. Suitable for MM and MC cartridgesPrecise RIAA equalisationUltra low noise circuitrySelection between 2 phono inputs & 2 line outputsDual mono circuitry for optimized channel separationSelectable input impedance (for MC: fixed or variable)Selectable input capacitance (for MM)Selectable subsonic filterGold-plated RCA in & outputsSandwich alu/metal casing protects from vibrations and electromagnetic interferenceHandmade in EuropeTubes: 2 x ECC83 (12AX 7A)Input impedance: variable 10-1000 ohms/ 47.000 ohms (47k?)Input capacitance : 47pF, 147pF, 267pF, 367pFGain: 40, 45, 50, 60 and 65 dB (switchable)Output voltage typically: 500 mV/1kHz at 5mV/1kHz (at 40dB)Noise floor: 88 dB (A weighted, at 40dB gain)THD: <0,04 %RIAA-equalisation curve accuracy: 20 Hz – 20 kHz / +0,2dB / -0,2dBInput: 2 pairs RCA/phono socketsLine-level output: 2 pairs RCA/phono socketsOutboard power supply: 18 V/1000 mA DCPower consumption: 490mA DC, <0,5W in standby