{"product_id":"applied-research-technologies-pdb4-direct-boxes","title":"Applied research technologies PDB4 Direct Boxes","description":"\u003c!-- more --\u003e\n\u003c!-- split --\u003e\u003cbr\u003e\u003ch4\u003eRoute Four Sources with the ART Pro Audio PDB4 4-Channel Passive Rackmount DI\u003c\/h4\u003e\n\u003cp\u003eThe PDB4 is a four-channel passive DI in a 1U rackmount format. It is ideal for connecting multiple unbalanced instrument, line, or speaker signals to balanced inputs.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e4 Independent Channels\u003c\/li\u003e\n\u003cli\u003e1\/4-inch TS Inputs and Thru Connectors\u003c\/li\u003e\n\u003cli\u003eTransformer-Isolated Balanced XLR Outputs\u003c\/li\u003e\n\u003cli\u003eSwitchable Ground Lift per Channel\u003c\/li\u003e\n\u003cli\u003eSwitchable Attenuation (0 dB, -20 dB, -40 dB) per Channel\u003c\/li\u003e\n\u003cli\u003ePassive Design - No Power Required\u003c\/li\u003e\n\u003cli\u003e1U Rackmount Enclosure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eEach input signal is sent to a balanced, transformer-isolated XLR output and a parallel Thru jack, so it can simultaneously be connected to an amplifier on stage.\u003c\/p\u003e\n\u003cp\u003eAll channels feature a switchable ground lift to help eliminate hum, and switchable attenuation with up to 40 dB of gain reduction to handle high signal levels.\u003c\/p\u003e\n\u003cp\u003eAs a fully passive design, the PDB4 doesn’t require an external power source. Passive DIs are often a great match for powered sources such as synthesizers or guitars and basses with active preamps.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eSPECIFICATIONS\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eActive or Passive: Passive\u003c\/li\u003e\n\u003cli\u003eInputs: 4 x 1\/4-inch TS\u003c\/li\u003e\n\u003cli\u003eOutputs: 4 x XLR, 4 x 1\/4-inch TS Thru\u003c\/li\u003e\n\u003cli\u003eInput Impedance: 50 kΩ\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: 600Ω\u003c\/li\u003e\n\u003cli\u003eControls: Attenuator (0 dB, -20 dB, -40 dB), Ground Lift (all per channel)\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 10 Hz - 50 kHz +\/- 0.5 dB @ +4 dBu\u003c\/li\u003e\n\u003cli\u003ePower Requirements: N\/A\u003c\/li\u003e\n\u003cli\u003eDimensions (HWD): 1.75 x 19 x 6 inches \/ 4.4 cm x 48.3 cm x 15.2 cm\u003c\/li\u003e\n\u003cli\u003eWeight: 6.5 lbs \/ 2.95 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\n\n\nManufacturer: Applied research technologies\u003cbr\u003eModel: PDB4\u003cbr\u003eSKU: I494577-N-4-WHXX\u003cbr\u003eUPC: 840402019756\u003cbr\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cb\u003eWe are Chuck Levin's Washington Music Center\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eSince 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.\u003c\/p\u003e\u003cp\u003eOur team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.\u003c\/p\u003e\u003cp\u003eChuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Applied research technologies","offers":[{"title":"Default Title","offer_id":43738138640447,"sku":"I494577-N","price":125.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/0972\/9087\/files\/f0281f5b-82bb-4b1f-b953-4e126f50a046.jpg?v=1787086373","url":"https:\/\/chucklevins.com\/products\/applied-research-technologies-pdb4-direct-boxes","provider":"Chuck Levin's Washington Music Center","version":"1.0","type":"link"}