Mic Archive
Shure Beta 98AMP
Photo: Shure, from its user guide, p. 1.

Shure

Shure Beta 98AMP

Miniature cardioid electret condenser instrument mic on a gooseneck with an integrated XLR preamplifier; sold with the A75M universal mount for drums and percussion

Type
Condenser (electret)
Pattern
Cardioid
Sensitivity
−50.5 dBV/Pa
Self-noise
31 dB(A)
Max SPL
157.5 dB SPL
Impedance
150 Ω
Rated range
20 – 20k Hz

Frequency response

Angle
Distance

Frequency response: from the user guide, p. 5. Frequency response graph titled "Beta 98AMP"; relative dB. Distance, room and smoothing not stated.

Dashed: outside the rated range, or simulated (other angles and distances). Hover or tap the graphs for values.

Polar pattern

Polar pattern: from the user guide, p. 5. Polar plots under the response graph: two plots (250 to 1000 Hz, 2500 to 10 000 Hz), 0° at the bottom, 5 dB per ring.

Compare with other mics

All specs

From the user guide
Capsulereplaceable cardioid cartridge RPM98A/C. "Replacement Parts: Cardioid Cartridge RPM98A/C". Page 3: make sure the cartridge is tightly secured before each use, as drumstick hits may loosen it.p. 4
Sensitivity−50.5 dBV/Pa (2.5 mV/Pa), open circuit voltage, 1 kHz, typical. "–50.5 dBV/Pa (2.5 mV)".
Self-noise31 dB(A), equivalent SPL, A-weighted, typical. "31.0 dB SPL-A".
Max SPL157.5 dB SPL, 1 kHz, 1% THD, 2500 ohm load; also 153 dB SPL, 1 kHz, 1% THD, 1000 ohm load. "THD of microphone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL". Measured with 48 V phantom.
Signal-to-noise ratio63 dB, ref. 94 dB SPL. "S/N ratio is the difference between 94 dB SPL and equivalent SPL of self noise, A-weighted".
Dynamic range126.5 dB, 1 kHz, 2500 ohm load; also 122 dB, 1 kHz, 1000 ohm load
Output impedance150 ohm. "Output Impedance 150 Ω".
Rated load impedance1000 ohm, recommended minimum; higher gives more headroom. "Shure recommends a minimum input load impedance of 1000 Ω".
Rated frequency range20 Hz to 20 kHz
Poweringphantom 11-52 V DC (IEC-61938). "11–52 V DC phantom power (IEC-61938), 5.5 mA"; "performs best with a 48 Vdc supply"; all specs measured at 48 V.
Current draw5.5 mA
ConnectorXLR, on the integrated preamplifier. "an integrated preamplifier with XLR connection".p. 3
Weight130 g, net. "130 g (4.6 oz.)".p. 4
Dimensions182.37 × 20.07 mm. Drawing: overall length 182.37 mm (7.18 in), preamplifier body diameter 20.07 mm (0.79 in); the angled head is 32.77 mm (1.29 in) long. Printed with decimal commas ("182, 37 mm").p. 5
Supplied accessoriesA75M universal microphone mount; A75-57F A75M small mic clip; 95A2314 zippered carrying bag; 95A2064 snap-fit windscreen. "Furnished Accessories".p. 4
ModelsBeta 98AMP/C: with the A75M universal mount; Beta 98AMP/C-3PK: three mics and three A75M mountsp. 3
MountFlexible gooseneck; A75M universal microphone mount (drum rims, stands and other hardware), with its own guide
Output clipping level12.5 dBV into 2500 ohm, 7.5 dBV into 1000 ohm (1 kHz, 1% THD)p. 4
Common mode rejection≥60 dB, "10 to 100,000 kHz"
PolarityPositive pressure on the diaphragm gives positive voltage on pin 2 with respect to pin 3
ConstructionEnamel-coated metal, stainless steel inner grillep. 3
Optional accessoriesRK183WS snap-fit windscreens (4); A412MWS metal locking windscreen; A57F mic clip; C25E 7.6 m (25 ft) cable; A75-25D A75M large mic clip; A75-UMA A75M universal microphone adapter; A53M Shock Stopper isolation mountp. 4
Placement (Shure)Toms: 2.5-7.5 cm above the head, or inside with the bottom head removed. Snare: 2.5-7.5 cm above the rim, aimed at the head. Cymbals: close, with the A75M, clear of the cymbal's swingp. 3

Documents

Copies kept by Mic Archive, because manufacturers move and drop their documents. Each is © Shure, unchanged, with its original address.

Product page on shure.comRecording Hacks

Recommended for

Instruments whose sources name this mic, or an earlier version or variant of it.

Other mics