{"product_id":"3640","title":"Studio Projects VTB1 Tube Microphone Preamp - With Box and Power Supply","description":"The Studio Projects VTB1 is a compact half-rack tube mic preamp with a solid-state front end feeding into a blendable tube stage. It handles mics, line, and instrument signals via front-panel Hi-Z TRS input, with switchable 48V phantom, phase reverse, and a 75Hz high-pass filter at -18dB\/oct. The key feature is the tube blend knob, letting you mix clean solid-state signal with tube warmth from the 12AX7 without changing levels. TRS insert sits between the SS pre and tube\/output for parallel processingGÇöone clean send from insert return, tube-colored main outs.Meter switches between input and output with five LEDs. Mic input has rear switch for 300 ohm or 2000 ohm impedance to match mics better. Solid gain staging: up to 72dB mic to balanced out, 42dB line. Runs off external 12V AC wall wart. Great as a character pre or DI for bass\/guitar, adds harmonics without mud.Outputs simultaneous balanced XLR and TRS line. Transformerless Class AB design keeps it clean when blended fully SS, with EIN -128dBu at 60dB gain. Frequency response stays flat 20-20kHz within 0.25dB mic path.\u003cb\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003eDimensions: 8.5 x 1.5 x 5 in\u003c\/li\u003e\n\u003cli\u003ePower: 12V AC external adapter\u003c\/li\u003e\n\u003cli\u003eMax gain: 72dB mic in to bal out, 42dB line in to bal out\u003c\/li\u003e\n\u003cli\u003eMic EIN: -128dBu (150 ohm source, 60dB gain)\u003c\/li\u003e\n\u003cli\u003eHi-pass filter: 75Hz, 3-pole -18dB\/oct\u003c\/li\u003e\n\u003cli\u003eTube: 12AX7\u003c\/li\u003e\n\u003c\/ul\u003e\u003cb\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/b\u003e\u003cbr\u003eThis item has been tested and is in good working condition. It comes with the original packaging. It has no Velcro on the back. Power supply included.","brand":"Studio Projects","offers":[{"title":"Default Title","offer_id":51848232206468,"sku":"3640","price":109.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0985\/2433\/2164\/files\/df54aa45-24b2-4222-be3c-d86cef1557ff.jpg?v=1778519765","url":"https:\/\/soundswap.online\/products\/3640","provider":"SoundSwap","version":"1.0","type":"link"}