Blue Blueberry Large-Diaphragm Cardioid Condenser Microphone
The Blueberry represents over 20 years of Blue's microphone innovation in a handcrafted large-diaphragm condenser built for demanding vocal sessions and acoustic instrument capture. Our proprietary single-backplate cardioid capsule delivers the warm, detailed presence Blue became famous for in studios worldwide.
Every Blueberry features a Class-A discrete amplifier circuit with custom-selected components that preserve transient detail while adding the musical character vocalists and engineers trust. The cardioid polar pattern provides excellent off-axis rejection for controlled room sound, making the Blueberry ideal for treated and untreated recording spaces alike.
We hand-tune each capsule and amplifier stage in our California facility, ensuring every Blueberry meets our exacting standards for frequency response, self-noise, and harmonic signature before it reaches your studio.
Blueberry capsule & circuit specifications
Capsule design & amplifier topology
The Blueberry’s capsule design draws from our two decades of large-diaphragm microphone engineering, combining a pressure-gradient single-backplate system with carefully tuned acoustic damping. We hand-select each diaphragm for consistent tension and gold-sputtering thickness, ensuring the signature Blue midrange presence and smooth high-frequency extension that makes vocals sit perfectly in a mix without excessive EQ.
Our Class-A discrete amplifier uses through-hole components we’ve tested across thousands of studio sessions. The circuit provides 40 dB of clean gain before your preamp, with second-harmonic distortion characteristics that add warmth without muddiness. This amplifier topology maintains phase coherence across the entire 20 Hz to 20 kHz frequency spectrum, preserving stereo imaging when you use matched Blueberry pairs for room miking or orchestral recording.
Vocal recording & acoustic instrument applications
The Blueberry excels on lead vocals across genres from folk to rock to hip-hop, capturing the intimate detail of breathy performances while handling powerful belt notes up to 138 dB SPL. The cardioid pattern lets vocalists work 6 to 12 inches from the capsule with natural proximity effect that adds body without boominess, and our internal pop filter reduces plosive energy before it reaches the diaphragm.
For acoustic guitar and upright bass, position the Blueberry 12 to 18 inches from the sound hole to capture the instrument’s full tonal range with excellent string definition. The extended low-frequency response to 20 Hz makes the Blueberry exceptional on grand piano, kick drum, and bass cabinets when you need sub-bass information in your tracking.
Polar pattern & room acoustics
The Blueberry’s cardioid polar pattern provides approximately 20 dB of rejection at 90 degrees off-axis and full null points at 180 degrees behind the capsule. This directional characteristic gives you excellent control over room reflections and bleed from nearby instruments during multi-source tracking sessions.
In untreated rooms with challenging acoustics, position the Blueberry’s null points toward reflective surfaces like windows or parallel walls. The cardioid response maintains consistent frequency balance as your vocalist moves slightly on and off axis, reducing the need for automation or compression to compensate for performance dynamics.
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Blueberry condenser microphone questions
The Blueberry's Class-A amplifier provides 40 dB of internal gain, so you'll typically need 20 to 35 dB of additional preamp gain for vocals at normal speaking levels. For quiet sources like fingerstyle guitar, you may need up to 45 dB of preamp gain. The microphone's 50-ohm output impedance pairs well with all modern audio interfaces and standalone preamps with input impedances above 1,000 ohms.
While the Blueberry is optimized for studio recording, its cardioid pattern and high maximum SPL make it suitable for controlled live settings like acoustic theater performances and small jazz venues. The large-diaphragm design is more sensitive to handling noise and stage vibrations than dynamic microphones, so always use the included shockmount on a quality boom stand. For high-volume rock stages with significant stage bleed, we recommend our <a href="/live-microphones/">dynamic vocal microphones</a> instead.
The Blueberry uses a fixed cardioid capsule with solid-state Class-A amplification, delivering consistent Blue tone for vocals and acoustic instruments at a mid-tier price point. Our <a href="/bottle-tube-condenser-microphone/">Bottle system</a> features tube circuitry and nine interchangeable capsules including cardioid, omni, and figure-8 patterns, providing greater sonic versatility for engineers working across diverse sources. Both microphones share Blue's hand-tuned capsule philosophy and 20 Hz to 20 kHz frequency response.
For most vocal styles, position singers 6 to 10 inches from the Blueberry's capsule. Closer distances (4 to 6 inches) increase proximity effect for added warmth on thin voices, while 10 to 12 inches reduces bass buildup for naturally full-bodied vocalists. The cardioid pattern maintains consistent frequency balance across this working distance range. Use the included pop filter or an external screen when tracking closer than 6 inches to control plosive energy.
The Blueberry incorporates internal acoustic filtering that reduces plosive impact on the capsule, but we recommend using an external pop filter for close-proximity vocal tracking (6 inches or less) where plosive energy is strongest. The included shockmount accommodates standard gooseneck pop filters, or you can use our <a href="/pop-filter-stand-bundle/">dedicated pop filter system</a> designed specifically for Blue large-diaphragm microphones.
Every Blueberry includes our limited lifetime warranty covering manufacturing defects in materials and workmanship for as long as you own the microphone. This warranty covers capsule diaphragm failure, amplifier circuit defects, and structural issues with the XLR connector or body housing. Normal wear from professional use, damage from phantom power spikes, and cosmetic wear are excluded. We also offer affordable out-of-warranty recalibration services to restore your Blueberry to factory specifications after years of intensive studio use.
Yes, we offer factory-matched Blueberry pairs with frequency response curves matched within ±1 dB for accurate stereo imaging. Matched pairs are ideal for X-Y and spaced pair techniques on acoustic instruments, drum overheads, and room ambience capture. Each matched pair ships with serialized certificates documenting the frequency response correlation. Order matched pairs directly through our studio microphone configurator or contact our sales team to match existing Blueberry serial numbers from your inventory.