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The Bottle, our highest achievement in quality and innovation, is our flagship recording tool, combining low noise and superb transient response integrated with a system of eight optional interchangeable capsules (the Bottle Caps). In an instant, these bayonet-mount capsules can be exchanged to provide different tonal characteristics and pickup patterns while the power supply remains on. The Class A discrete amplifier circuit of The Bottle is a thoroughly modern homage to the past, with a design utilizing a single hand-selected EF86 pentode vacuum tube in triode mode. When combined with the versatility of our Bottle Caps, The Bottle provides the ultimate recording experience. In keeping with our philosophy of sonic purity and fidelity, we do not incorporate pads or filters into The Bottle. Rather, we believe that proper mic selection and placement eliminate the need for such extraneous circuits which only degrade signal integrity.

The Bottle Caps, Blue's innovative system of eight interchangeable capsules, offer the recordist a variety of different tonal characteristics and pickup patterns.


  • The ultimate in hand-built craftsmanship
  • Class A discrete amplifier circuit with hand-selected EF86 pentode vacuum tube in triode mode
  • Mic system-allows for various capsules to be swapped "on the fly" for extreme versatility
  • Integrated capsule shockmounting
  • Hand tuned and tested
  • Custom wound output transformer
  • Includes B6 capsule, our renowned PowerStream Power Supply, Champagne tube mic cable, and ATA flight case

Frequency Response Chart

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Frequency Response

Technical Specs

Transducer Type: Vacuum Tube Condenser
Polar Patterns: Various (Capsule-dependent)
Frequency Response: 20Hz 20kHz
Sensitivity: 20.0 mV/Pa at 1kHz (1 Pa = 94 dB SPL) w/B6 Capsule
Output Impedence: 200Ω
Rated Load Impedence: Not less than 1kΩ
Maximum SPL: 134 dB SPL (2.5kΩ, 0.5% THD) w/B6 Capsule
S/N Ratio: 86.5 dB-A (IEC 651) w/B6 Capsule
Noise Level: 7.5 dB-A (IEC 651) w/B6 Capsule
Dynamic Range: 126.5 dB (@ 2.5kΩ) w/B6 Capsule
Power Requirement: Bottle Power Supply Unit 115/230 VAC, 50/60 Hz
Weight: 1700g
Dimensions: 390mm x 90mm


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