ASTATIC - 40-353 – “Blue Line” Pro Series Cable 25', Microphone 1/4" Plug to XLR Female Plug, New

ASTATIC - 40-353 – “Blue Line” Pro Series Cable 25', Microphone 1/4" Plug to XLR Female Plug, New An Astatic Blue Line 40-353 cable is a 25-foot audio cable designed for professional use in the Blue Line Pro Series, featuring a nickel-plated TS ¼” Mono plug at one end and a 3-pin female XLR jack at the other. It's used to connect instruments or low-impedance microphones to medium-to-high impedance amplifier inputs, featuring an internal impedance-matching transformer for better signal quality. Status: Discontinued - The Astatic 40-353 "Blue Line Pro Series" microphone cable is no longer made. While the Astatic brand name continues under CAD Audio, the original Blue Line Pro Series of microphones and cables has been discontinued for decades. This original US-made Astatic 40-353 cable was known for its quality. Later versions of Astatic products were made in China or Taiwan have been criticized for quality issues. XLR to 1/4 inch cables are typically used for analog signals, primarily audio. These cables are commonly used on headphones, microphones, amplifiers, instruments, speakers, and much more. This cable features an unbalanced nickel plated TS ¼” (6.35mm) plug and 3 pin XLR jack. Blue Line Pro Series audio cables are perfect for novice and professional musicians. Features: • Impedance matching: The Blue Line Pro Series Cable with an XLR to 1/4 inch connector configuration has an internal impedance matching transformer for connecting low-impedance microphones to medium-to-high impedance amplifier inputs. The impedance matching ratio for the Astatic 40-353 cable's internal transformer is not officially published, as is common for many specialized audio components. However, its function of converting a low-impedance microphone signal to a high-impedance amplifier input indicates an impedance step-up ratio in the range of 1:100 to 1:250. The Astatic 40-353's transformer is designed for bridging, converting a mic-level, low-impedance signal to a hi-Z input for devices like guitar amplifiers. • Solid construction: The Pro Series cables are noted for a sturdy build, including robust casing and a strong, pliable cord. This design makes them suitable for demanding environments like mobile or vehicle-based communication. • Durability: Astatic's coiled replacement cables are designed with strain relief, a feature that helps prevent common issues such as cords pulling out of the microphone. • Good sound quality: Astatic's microphones and associated cables are known for providing clear and loud sound for radio communication, even without extra amplification. This is crucial for their primary use in CB and amateur radio. • Length: 25 feet • New Old Stock – Genuine Vintage Astatic 1980s – Proudly Made in USA - Rare