The MXL 550/551R is a matched pair of condenser microphones designed for professional vocal and instrument recording applications. This microphone set features two distinct models that work together to provide versatile recording capabilities for studio environments. The MXL 550 offers a cardioid polar pattern with a frequency response of 20 Hz to 20 kHz, making it suitable for capturing detailed vocal performances and acoustic instruments. Its companion, the MXL 551R, provides a similar frequency response but includes a 10 dB pad switch and low-cut filter for additional control in various recording situations. Both microphones utilize large 1-inch gold-sputtered diaphragms that deliver clear, natural sound reproduction with minimal self-noise. The microphones operate on standard 48V phantom power and include shock mounts to reduce handling noise and vibration interference. Constructed with durable metal bodies, these microphones measure approximately 180 mm in length and 50 mm in diameter, with each unit weighing approximately 500 g. The set comes complete with two microphones, two shock mounts, and two protective pouches for secure storage and transport. This microphone pair is engineered for recording engineers and musicians who require reliable, high-quality audio capture for vocals, acoustic guitars, pianos, string instruments, and other acoustic sources. The matched design ensures consistent tonal characteristics between both microphones, which is particularly valuable for stereo recording techniques and multi-microphone setups. The inclusion of both standard and feature-enhanced models in one package provides flexibility for various recording scenarios without requiring additional equipment purchases.