The Endevco ½-inch preamplifier model EM26CA is a general purpose preamplifier optimized for use with prepolarized condenser microphones. It is a small, robust unit and uses a Endevco Isotron® power supply, e.g. model 4416B. It has a very low inherent noise level, a large dynamic range and a frequency response from below 2 Hz to above 200 kHz. Its small ceramic thick-film substrate has a very high input impedance, and is shielded by a guard ring to minimize the influence of stray capacitance and microphonic interference. The model EM26CA is delivered with a built-in TEDS* chip, and can be programmed as a single unit with a microphone fitted. It can be used with all Endevco prepolarized microphones, namely: • ½-inch microphones: Models EM40AE, EM40AD and EM40AQ • ¼-inch microphones: Models EM40BE and EM40BD, using the optional ½-inch to ¼-inch adaptor It has an integrated BNC output connector. The casing is made of stainless steel for maximum strength and durability. * Transducer Electronic Data Sheet - as proposed by IEEE-P1451.4 • Isotron® inputs • Prepolarized microphones • ½” precision microphones • High levels and high frequencies Endevco® model EM26CA ½” microphone preamplifier Typical features / applications Description cmyk

Endevco® model EM26CA ½” microphone preamplifier Specifications Frequency response (cable load 4.7 nF): 2.5 Hz–200 kHz ±0.2 dB Input impedance: 20 GÙ, 0.4 pF Output impedance (Cs = 20 pF, f=1000Hz): (typically < 25 Ù) Noise (measured with 20 pF ½-inch dummy mic.): A-weighted: 2.5 ìV rms (typically 1.8 ìV rms) Linear (20 Hz–20 kHz): 6 ìV rms (typically 3.5 ìV rms) Gain (measured with 20 pF ½-inch dummy mic.): Typically: -0.30 dB Power-supply: 2 mA to 20 mA (typically 4 mA) Maximum signal-output voltage (peak): ±8.0 V Temperature: Operation: -30°C to +70°C (-22°F to 158°F) Storage: -40°C to +85°C...