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Prices Listed Per Single Monitor. Call for 2.1 and 5.1 Package Pricing.
Please note that custom finishes are no longer available from K+H.


Free US ground shipping on K+H products!
M 52 - Active Control Monitor
The all-aluminium enclosure offers maximum interior volume. Added rigidity from inner wall bracing ensures an absence of resonant colorations. The 75mm (3") broadband neodymium driver performs remarkably for an enclosure of this size, delivering an accurate, smooth response and low distortion across the entire pass band.

M52 + Digital Input = M 52 D

We took the M 52, expanded upon the existing design, equipped it with switchable inputs for both analog and digital signals in AES3 (AES/EBU), AES3id and S/P-DIF format, and christened the new model the M 52 D. The D/A converter has 24-bit resolution and a sampling rate of 32 - 96 kHz. The analog input is transformer-balanced and floating. A rotary switch on the front panel allows you to select from four sources: the analog input, digital left, digital right, or both digital channels combined.

Power switch, volume control, and the signal selection switch are all conveniently located on the front panel of the compact cabinet. The rear panel hosts an XLR connector which can accept either the analog signal or the AES/EBU digital signal, and a BNC connector for an AES3id or S/P-DIF digital signal, which makes for easy daisy-chaining. Other connectors, including battery input, are located on the back panel.
Standard M52 Single
List: $966.68
Our Price: $599.00
M52 D (Digital) Single
List: $1331.12
Our Price: $799.00
P 110 - Passive Studio Monitor
This compact, passive 2-way near-field studio monitor is best suited to small spaces. The P 110 provides amazingly precise bass reproduction for its size down to 72 Hz (–3 dB). The homogenous LRIM (Low Resonance Integral Moulding) enclosure guarantees an optimal waveguide and perfect dispersion patterns. The high quality components and the specially constructed interior prevent standing waves, and partial coloration is almost completely eliminated. The result is extremely low-distortion, absolutely natural sound reproduction. Additionally, there are four placement options available, allowing you to place the P 110 in a variety of locations. It is also an excellent value-for-money choice for surround-sound applications.
P110 (Passive) Single
List: $877.78
Our Price: $549.00
O 110 - Compact and Truly Uncolored
When the O 110 nearfield monitor was just on the drawing board, we set ourselves some extremely high standards and goals. Meeting these required us to take an unconventional approach to selecting materials and developing components, after which we continually refined every design detail in the pursuit of perfection. The resulting system is a compact reference monitor with outstanding sonic qualities of the sort normally associated only with substantially larger studio loudspeakers.

For all recording, mixing, and mastering engineers working in smaller listening environments and studios, this nearfield monitor offers a professional “tool” that achieves true impulse response and superbly flat frequency response across the entire audible range, and delivers articulate bass with a precision equal to that of many larger systems.

Standard O110 Single
List: $1500.00
Our Price: $899.00
O110D (Digital) Single
List: $1931.12
Our Price: $1249.00
O300 - Accurate, Absolutely Uncolored Sound
Our aim with the O 300 was to strive for nothing less than perfection in developing the best compact active reference monitor possible, with accurate, uncolored sound, superb transient response, and ideally shaped waveguides.

The O 300 is a monitor which draws upon all of KLEIN + HUMMEL’s years of experience in monitor design, which has been fine-tuned through extensive computer simulations and countless listening tests. It is indeed unique in its class, for it does in fact deliver superlative sound absent of colorations, precise bass response, picture-perfect dispersion patterns, and a stunningly real soundstage with remarkable image focus and depth.

Standard O300 Single
List: $3508.90
Our Price: $2199.00
O300D (Digital) Single
List: $3997.78
Our Price: $2599.00
O410 - Active Studio Monitor
The O 410 represents the latest incarnation of the many technologies pioneered by us during the intervening 40 years. Engineering excellence applied to all aspects of the O 410 design brings a new benchmark in audio reproduction quality. A waveguide featuring Mathematically Modeled Dispersion™ (MMD™), flexible acoustical controls, various input options, and an extensive mounting hardware range allow the O 410 to be used in diverse acoustical conditions, with any source equipment, and in a wide variety of physical locations.

The O 410 has been designed for use as a mid-field or main monitor. It is particularly well-suited for use in music, broadcast, and post production studios for tracking, mixing, and mastering. The O 410 can be used free-standing or flush mounted into a wall, and, in multichannel systems, can be mixed freely with other loudspeakers in the range.
Standard O410 Single
List: $7775.56
Our Price: $4899.00
O 500 C - Digital Active Main Monitor
The O 500 C is one of a new class of large reference monitors that employ an integrated digital controller. Utilizing active FIR filters, this monitor delivers an entirely new dimension in playback quality. Digital signal processing combined with Finite Impulse Response (FIR) filters make it possible to control the amplitude response and the phase response independently of each other.
As a result, not only can the crossover be made to function as a linear phase filter, but the most detailed and thorough equalization of the three individual drivers can also be achieved.

The O 500 C can be fine-tuned to compensate for the acoustic peculiarities or deficiencies of a given studio, and thereby significantly improve listening conditions. The controller can bring about substantial improvements in the rise-time and decay time of the loud-speaker membranes, thereby im-proving acoustic phase response and time coherence. The monitor offers digital and analog inputs as well as a MIDI and an RS232 interface. Using the MIDI interface you can recall all setups and all parameters that can be set using the software. As an option, you can recall different equalization setups for different purposes, such as for classical recordings, pop, or drama. All user-specific parameters can be saved to a plug-in memory module, allowing for the quick and easy transfer of data to another studio monitor of the same type in the event your monitor needs to be serviced or swapped out. There is an additional output for connecting an active subwoofer; if you make use of this output, the digital controller of the O 500 C will assume the crossover, equalization, and phase correction functions for both units. As a result of this new technology, you can experience sound, space and time reproduced with an accuracy like you have never known. Until now.
Standard O 500 C Single
List: $17998.010
Our Price: $9999.00
Special Order
Call to order
O 800 Active Subwoofer - The perfect low-frequency complement
A profusion of developments in audio and modern digital technologies are placing new demands today on active monitoring. Multi-channel productions require high-quality studio monitors and active subwoofers that can be used for both matrix-encoded formats and discrete formats as well. The O 800 matches these new demands of modern studio technology precisely. Whether as the perfect low-frequency complement to all KLEIN + HUMMEL monitor systems, or as an LFE unit (Low Frequency Effect), the O 800 will fit every possible combination of surround system specified today. Active studio monitors from KLEIN + HUMMEL have developed a reputation for their seamlessly integrated sound. With the advent of the O 800 it is now possible to assemble entire monitoring systems for different sizes of studios with a smoothly uniform frequency response that ranges from 30 Hz to 20 kHz. The extraordinary dynamics, incredible accuracy and precise stereo soundstage of our monitors provide audio engineers with the confidence they need to make sure critical judgments of multi-channel audio material.


O800 Active Subwoofer
List: $3331.12
Our Price: $1999.00

O 810 Active Subwoofer with 7.1 High Definition Bass Management™ - 10" Driver
As consumer technology advances at ever faster rates, professional technology increasingly finds itself trying to keep up. An example of this is the advent of the Blu-ray and other high definition formats that have increased the audio channel count to 7.1.

The O 810 is an answer to these new demands by offering a new 7.1 High Definition Bass Manager™. This is compatible with all standard consumer formats from mono through to the latest 7.1 HD systems. Eight channels of analog ensures flexible interconnectivity for modern studios. Four-mode LFE-channel processing guarantees compatibility across all formats and industries. Forth-order crossovers and flexible acoustical controls allow for seamless system integration. Built-in volume control and a hardware remote control allows for centralized system control independent of the source, and the electronics can be remote located to reduce cabling

The latest amplifier technology and acoustical components have been used to ensure the most accurate sound reproduction possible. Robust drivers, a rock-solid cabinet, and carefully designed ports guarantee a tight, articulate, and distortion-free low frequency reproduction, even at high replay levels. Using the sum output, Plane Wave Bass Array™ (PWBA™) techniques acoustically improves lateral consistency in the listening area. The bass extends down to 18 Hz.

The O 810 subwoofer is designed to complement Klein + Hummel’s extensive range of monitors, and can be used on its own, or daisy-chained to make larger systems capable of higher SPL. The O 810 can be used in music, broadcast, and post production studios for tracking, mixing, and mastering. The cabinet can be positioned next to a wall or flush mounted into a wall due to the front mounted port, and can be mixed freely in multichannel systems with other loudspeakers from the Klein + Hummel range.


O 810 Active Subwoofer
List: $5108.90
Our Price: $3499.00

O 870 Active Subwoofer with 7.1 High Definition Bass Management™ - 2 x 10" Drivers




O 870 Active Subwoofer
List: $7331.12
Our Price: $4999.00

O 900W Passive 2 x 12" Studio Subwoofer, anthracite painted finish
The high-performance O 900 studio subwoofer is the ideal complement for the O 500 C studio monitor. Precise bass reproduction is achieved down to 17 Hz (– 1.5 dB). The 120 liter cabinet gives a high maximum sound pressure output with a flat frequency response. This is due to the ingenious enclosure design, as well as the use of uncompromisingly constructed drivers. The O 900 can use the analog subwoofer output of the O 500 C and an external amplifier (K+H KPA 2220 recommended).



O 900W Passive Subwoofer
List: $4220.00
Our Price: $2699.00

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