Detail 01
Three selectable polar patterns
Lets one microphone be set to cardioid, omni, or figure-8.
Product detailSKU #1500000387319
Universal AudioUA Bock 251 Tube Condenser Microphone With Power Supply
1/8
Independent shopping perspective
The Korena take
Hand-built at Universal Audio’s Santa Cruz Custom Shop, the UA Bock 251 is a tube condenser intended for recording work that calls for a vintage-style character with updated performance. A German-made CK12 capsule and large output transformer sit behind its 10Hz–18kHz response and 118dB SPL rating. Select cardioid, omni, or figure-8 as the session requires. The microphone is supplied with a power supply, and its green finish, vintage-inspired case, and robust shockmount complete the presentation.
Strong match
Who this is for
- Studio recordings where switching among cardioid, omni, and figure-8 pickup patterns is useful.
- Sessions that call for a tube condenser with extended response down to 10Hz.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Tuchel microphone connection; 3-pin XLR power-supply connection
The microphone and power supply use different specified connector types.
Final check
Know before you order
- 01Allow for the separate power supply when planning microphone placement and routing.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Which pickup patterns are available?
Cardioid, omni, and figure-8 are selectable.
02What is the frequency range?
10Hz–18kHz, ±2dB.
03Is a power supply provided?
Yes. The product is supplied with a power supply.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
5 detailsSound
- Max SPL
- 118dB SPL, 1% THD
- Recommended Load Impedance
- Greater than 1.2 kohms
- Frequency Range
- 10Hz–18kHz, ±2dB
- Polar Pattern
- Cardioid, omni, figure-8
- Sensitivity
- –34dB (19mV) ref 1V at 1Pa, 1kHz
1 detailsPickups & controls
- Adjustable Controls
- Polar pattern selector for cardioid, omni, figure-8
1 detailsBody & build
- Color
- Green
2 detailsConnections & power
- Output Impedance
- 150 ohms
- Connector
- Tuchel (mic), 3-pin XLR (power supply)
2 detailsSize & weight
- Weight
- 1.58
- Dimensions
- 8.5 inch (216 mm) length, 2 inch (52 mm) diameter
1 detailsOther
- Microphone Type
- Tube condenser
