O.S acoustics

Taking you closer to the performance

  “The DB7s are the most accurate yet punchy speakers I have ever used and I’ve used a lot!
The detail is incredible, I can really hear every small E.Q decision.
These will be in the studio for many, many years


Glen Nicholls – Mastering Engineer, Film Composer, Sound Designer & Producer
Rupert Gregson-Williams, Nine Inch Nails, Erasure, The Prodigy, Snow Patrol, Sia, UNKLE and Many More…..

  “It is not an understatement to say that the DB7’s have blown me away. There is a depth to the speakers that is pleasingly 3-dimensional. The DB7’s are non-fatiguing and such a joy at lower volumes I can extend my workday. My client is someone I have worked with since 1995 & he remarked immediately about the quality of the mixes

Brad Wood – Record Producer, Mix Engineer & Musician
Liz Phair, Placebo, Sunny Day Real Estate, The Smashing Pumpkins, Pete Yorn, Veruca Salt, Ben Lee and Many More….

  “The first thing that struck me was the image and tonality, the DB7 is very un-fatiguing which when working 10-12 hour days is vital. Bottom-end drive and energy is tight and accurate, the top end detail is supported fully by a very smooth mid-range response. I love them!!!”


Kevin Duff – Sound Supervisor, Dubbing Mixer, 4 Times BAFTA Award Winner & RTS Sound Award Winner
The Voice, TFI Friday, Royal Variety and Many More….

  “O.S Acoustics have nailed it with the DB7. I tried everything in my long search to find a set of nearfields that worked well with my big PSIs. The DB7s do just this. They have great clarity across the whole audio spectrum, it is very easy to hear if something in the balance of the mix is out. Dynamics and transient response work well even at low levels which is key for me.”

James Reynolds – Mix Engineer
Snoop Dog, Gorillaz, Tiësto, Mark Knight, Calvin Harris, Ellie Goulding, Tinie Tempah, Pixie Lott, Paloma Faith and Many More….

DB7 – 2-Way Active Studio Monitor:

The O.S Acoustics DB7 is a high-precision reference studio monitor. Offering exceptional frequency response and time domain coherency. Ultra-rigid, high-fidelity drive units operate in pistonic motion throughout the working frequency range, lowering distortion and maintaining harmonic purity.
Powered by the best class-D amplifiers on the market, offering unequalled sonic performance and huge power reserves, the DB7 delivers a breathtaking performance that is clean, dynamic, open and articulate.

Key Features:

 • Extremely linear frequency response
 • Exceptional impulse time response
 • Time-coherent FIR phase correction filter
 • High fidelity, ceramic coated magnesium and aluminium drive units
 • Powerful, ultra audiophile class-D amplification
 • Low distortion
 • Low crossover point for improved imaging
 • Advanced DSP, dual-voiced with 8 presets
 • FEM optimised, deep and heavily braced enclosure for extended low-frequency response
 • Energy Star and ErP power saving compliant with Wake On Music
 • Universal Mains with Power Factor Correction
 • High quality 24-bit 96kHz Cirrus Logic AD/DA converters
 • Individually calibrated and hand tested

The DB7 has been designed with a philosophy of “The whole is greater than the sum of its parts”. By using the best components available with meticulous engineering and refinement, we have created something very special. The result is a true reference monitor, featuring a highly linear frequency response and advanced phase correction algorithm for natural time coherency, delivering absolute clarity and lifelike stereo imaging. The DB7 is perfect for any audio work where a high level of accuracy is required, including Mixing, Mastering, Broadcast, Film, TV and any other application where an absolute reference is required.

Ceramic coated magnesium is a near perfect tweeter diaphragm material, damping unwanted resonances with an especially low moving mass of only 0.2 Grams. Powered by a 150W RMS amplifier gives an incredibly fast, highly accurate and well-controlled impulse. Transient response is further improved by accurately time aligning the total system phase response, compensating for the drivers’ minimum phase characteristic, improving natural timbre, restoring time coherency and lowering listening fatigue.

The cabinet has been subjected to a meticulous study in Comsol multiphysics leading Finite Element Analysis software. A complex latticework of bracing has significantly reduced cabinet resonances, with front baffle vibrations being more than halved. The low-frequency driver is held rigid by significant bracing supports across four of its axes, stopping any twisting or rocking motion, revealing more subtle nuances and even more micro-dynamics. The cabinets are highly repeatable, cut to very fine tolerances with computerised numerical control machining. Finished in a beautiful veneered black oak.

The onboard DSP module offers a selection of 8 presets. Choose from critically flat or voiced, each with the option to enable or disable the FIR phase correction filter. Finally, for smaller rooms, you can also choose to apply the same presets with a small-room boundary correction, which counteracts the effects of local boundary reinforcements in the low frequencies.

The class-D T-Pro2 amplifier module offers unequalled audiophile specifications, incredible power reserves and high damping factor ensuring fast, tight control of dynamics and bass transients. Configured to comply with ErP (1275/2008/EC) and Energy Star directives, using less than 0.5 watts in standby mode. Intelligent Standby Signal Processing in the DSP initiates standby mode when no signal has been detected for a period of 15 minutes. When activated the amplifier power consumption is typically reduced to 0.2 watts. The amplifier automatically exits standby mode as soon as a signal is redetected, typically waking up in 660 milliseconds without audible pops and clicks inherent in other designs.

Take your monitoring experience to completely new levels and get closer to the performance with the O.S Acoustics DB7.

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Uncorrected Impulse Response

Impulse Response with Phase Correction


DB7 Frequency Response

DB7 Phase Response

Frequency Response

40 Hz – 20 kHz (±2 dB > 65Hz)

Performance Consistency

Matched to within 0.5 dB

Design Principle

2-Way Front Ported Bass Reflex


1” Ceramic Coated Magnesium


6.5” Aluminium


2.1 kHz

Phase Tolerances

± 15° (200 Hz – 20 kHz)

THD (90 dB SPL at 1m)

Less than 1% (75 Hz – 20 kHz)


105 dB

Dimensions (HxWxD)

403 x 208 x 437 mm


11.80 kg


Class-D UMAC™ with ultra low distortion


500W + 150W (RMS)

Signal To Noise-Ratio

>120 dB (A-weighted, 20 Hz – 20 kHz)

THD+N (Typical use)

<0.05 % (3 dB below rated power)

Power Supply

UREC™ Universal mains switch mode with Power Factor Correction

Operation Voltage

Universal Mains, 85-265V, IEC

Standby Signal Processing

Energy Star and ErP compliant

Digital Conversion

24-bit, 96 kHz Cirrus Logic

Analogue Input

Balanced XLR

DSP Presets