PMT Audio
Manley Labs Reference Silver

Manley Labs

Reference Silver

Tube Microphone

From Manley Labs:

The Manley Reference Silver delivers large-diaphragm tube microphone performance inspired by the acclaimed Sony C-37A, combining an American-made Josephson capsule with all-tube Manley circuitry. Hand-built in California, it provides rich midrange tonality and extended frequency response for vocals, instruments, and ensemble recording. It wins where warmth and dimensional imaging are prioritized over clinical accuracy.

The Reference Silver employs an American-made capsule design reflecting classic C-37A sonic characteristics, delivering rounded midrange presence without sibilance or resonant artifacts. This tonal balance proves effective for female vocals and saxophones, capturing harmonic content and spatial information with cohesion. The controlled high-frequency response makes the microphone equally suitable for drum overhead applications, managing cymbal transients without excessive brightness or harshness.

The Reference Silver provides mechanically switched cardioid and omnidirectional polar patterns via rear-mounted selector on the head basket assembly. This dual-pattern capability enables adaptation between focused, proximity-effect-influenced cardioid response and diffuse omnidirectional capture for room tone and ensemble recording. Pattern selection facilitates matching microphone characteristics to source positioning and acoustic environment requirements across diverse recording scenarios.

Specs

Type
Condenser Transducer based on vintage Sony C-37A Hand Made in USA by Josephson Audio
Capsule
Single-Sided Large Diaphragm Capsule Edge Tensioned, 5 Micron Evaporated Gold Diaphragm 1" diameter
Pattern
Dual Pattern Cardioid or Omni Directional adjustable via vent on the backplate
Frequency response
10Hz-30kHz, AMP to 60kHz
Sensitivity
7mV/Pa
Output impedance
30 Ohms
Amplifier noise
Typically -108 dBV “A Weighted”
Maximum input SPL
150 dB SPL at Capsule
Amplifier
5670 Internal Vacuum Tube Head Amplifier; Constant Current Source for Tube Minimizes Noise and Tube Selection
Amplifier type
2 Triode Gain Block Lo Z Output
Amplifier distortion
Less Than 0.05 % THD+N BW 22-22 kHz (1kOhm Load, 1kHz -40dBV Output)
Output transformer
Hand Wound Nickel Core Manley Iron Output Transformer
High pass filter
High Pass Filter Switch -3dB @ 55Hz 6dB/8va
Power
Custom Designed Outboard Switched Mode PSU 90V ~ 250VAC Universal Voltage Operation 50Hz-60Hz
Power consumption
8 Watts
PSU mains fuse
5mm X 20 mm, 2A @ 250V, CERAMIC, Slo-Blo
Output polarity
Balanced XLR, Pin 2 Hot, Pin 3 Low
Size
mic body 2" diameter x 9.7" long x 4.5" (mic suspension outside diameter)
PSU size
5" x 3.3" x 9.3" (including handle)
Mic weight
1.5 lbs
PSU weight
2.35 lbs
Body
Etched Silver Anodized Aluminum

Source: Manley Reference Silver product page