N22H is a standalone reference-quality headphone amplifier, a cable management system, and an advanced headphone distribution system.

Heritage Audio is proud to introduce the first ever impedance headphone matching amplifier for studios and audiophiles that accommodates to your headphones to bring out their full potential. Discover your headphone’s full potential. Whether you want to use its balanced input, gold-plated RCA input or even its pro quality Bluetooth receiver with Burr Brown DAC, the O.H.M Amp offers three independently selectable top quality input sources for your headphones to shine. Once the input source is selected, the O.H.M Amp’s impedance switch allows you to match the signal’s output impedance to your headphone’s particular impedance to ensure you get the most out of your them, whether they be a set of the cheapest low impedance earbuds around or one of the highest quality, audiophile-grade models.

The Lake People Phone-Amp G103-P MKII is a stereo headphone amplifier for recording and livesound. Different to most comparable models the overall gain may be altered with the aid of internal jumpers to better match specific headphone characteristics. Due to this technique, this headphone amplifier is able to drive nearly all existing headphones from 8 … 600 ohms load impedance. Because of its noise- and THD-optimized circuitry layout, G103-P MKII covers high quality demands. In spite of its compact dimensions, G103-P MKII offers optimum flexibility and high power. Reliability even under rough or improper handling conditions has been another important goal of development. Thus, the unit is absolutely long-term short-circuit proof. In addition, the G103-P MKII is equipped with filters to prevent overload by inaudibly low and high frequencies. The case of G103-P MKII is made of black anodized aluminium, including the front- and back panels. This provides high mechanical stability and resistance against rough handling. The cases surfaces are providing excellent electrical conductivity for optimum EMC characteristics. Mains is connected via a three-pin IEC/CEE socket and a matching three-wire mains cable with Central Europe-type mains connector. The mains cable may vary to fit the demands of different markets The unit is factory-set to a mains voltage of 230 V AC. Mains voltage may vary between 190 and 250 without any effect on flawless operation. The built-in mains transformers provide the internal supply voltages of approx. +/- 25 V.

The Lake People PHONE-AMP G118 is a balanced headphone amplifier based on the circuits of the approved and valued PHONE-AMP G111 but in a 19“, 1 U case. Besides the outstanding reproduction qualities G118 offers a Mono / Stereo / Phase-Reverse switching, Pre-Gain on the front panel, X-FEED and a VU-Meter for level control.

Dynamic headphones are much more different than most people realize. For the same sound pressure level the power needed with different headphone models can vary up to a factor of about 500! Impedances can be different to a factor of more than 20! This is the reason why different headphone models have very individual requirements to the headphone amplifier driving them in terms of voltage and current. Everybody who once has connected a high quality headphone to any given standard headphone output knows about this problem. Since the launch of the Linear in 2004 there is a high end headphone amplifier to realize even the highest demands to reference quality headphone music reproduction. The selectable gain (0 dB, 10 dB, 20 dB) of the Linear effectively optimizes the output level of the zero global feedback Class A output stage. Practically all high quality dynamic headphones available will show their best possible performance, no matter if you have an easy to drive low impedance pair of headphones or an ineffective pair of 600 ohms studio cans. Top notch components and a highly sophisticated circuit design Carefully selected top notch components and a highly sophisticated circuit design guarantee top performance listening pleasure. For stereo setups with just one source like a CD player or a turntable with a phono stage the Linear is the simplest and most effective active preamp one can think of. All audio connectors including the two Neutrik phone jacks come with gold plated connectors. No external Y-adapter is needed! The faceplate and the massive milled aluminium knob for the smooth running 27 mm ALPS high grade volume control are available in anodized black or silver. To get the best out of your headphone you will have to try the Linear.

Dynamic headphones are much more different than most people realize. For the same sound pressure level the power needed with different headphone models can vary up to a factor of about 500! Impedances can be different to a factor of more than 20! This is the reason why different headphone models have very individual requirements to the headphone amplifier driving them in terms of voltage and current. Everybody who once has connected a high quality headphone to any given standard headphone output knows about this problem. Since the launch of the Linear in 2004 there is a high end headphone amplifier to realize even the highest demands to reference quality headphone music reproduction. The selectable gain (0 dB, 10 dB, 20 dB) of the Linear effectively optimizes the output level of the zero global feedback Class A output stage. Practically all high quality dynamic headphones available will show their best possible performance, no matter if you have an easy to drive low impedance pair of headphones or an ineffective pair of 600 ohms studio cans. Top notch components and a highly sophisticated circuit design Carefully selected top notch components and a highly sophisticated circuit design guarantee top performance listening pleasure. For stereo setups with just one source like a CD player or a turntable with a phono stage the Linear is the simplest and most effective active preamp one can think of. All audio connectors including the two Neutrik phone jacks come with gold plated connectors. No external Y-adapter is needed! The faceplate and the massive milled aluminium knob for the smooth running 27 mm ALPS high grade volume control are available in anodized black or silver. To get the best out of your headphone you will have to try the Linear.

Professional mastering-grade headphone amplifier with a discrete Class A output stage and zero global feedback, featuring balanced XLR combo inputs and two Neutrik 6.3 mm headphone outputs. Includes EU power cable.

Professional mastering-grade headphone amplifier with a discrete Class A output stage and zero global feedback, featuring balanced XLR combo inputs and two Neutrik 6.3 mm headphone outputs. Includes EU power cable.

The Monotor is designed for the professional audio engineer who requires detailed source analysis. Features include extensive mono capability, including left minus right for accurate phase and compressed audio file artifact analysis. The super fidelity audio path uses hand wound, super low distortion transformers and a single active headphone driver stage per headphone out. The inputs are transformer coupled for no headache balanced or unbalanced source connection, with paralleled XLR/TRS combo and TRS jacks for easy hookup. Power is supplied by state of the art, low noise, full voltage, linear on board regulators.   Features   Dual 1/4" and 3.5 mini jack headphone outs for partner monitoring. Extensive mono monitoring capability, left plus right, left, right, and even left minus right, for phase check and digital compressed audio file analysis. Internal state of the art super low noise linear voltage regulation, providing audiophile full current/voltage Easy input interface for balanced or unbalanced gear. Minimal audiophile (almost completely passive) circuit path using a single, truly state of art active stage (opa 1622) per headphone output. XLR/TRS combo jack inputs in parallel with TRS jacks for easy in-line monitoring hook up. Stereo mini aux input for talkback communication or easy portable player hookup. Quality stepped volume attenuator with internal bypass for remote volume control capability. Rack-mountable, up to 4 Little Labs devices fit in a 1u space.  

The Radial H-Amp is a unique interface that allows you to connect multiple headphones to a power amplifier or in-line with a loudspeaker such as a wedge monitor or PA cabinet. In other words, you simply connect the output from the amp or the parallel through connection from the loudspeaker and the H-Amp converts the signal to safely supply your headphones.Designed to accommodate two musicians at the same time, the H-Amp is equipped with two headphone outs - each with individual level control. A special 3-band filter lets you EQ the tone to help compensate should the mix going to the headphones from the loudspeaker need to be adjusted. The EQ filter can also be assigned to one set of headphones should two different types be used at the same time. Connection to the H-Amp is done with a standard Neutrik Speakon 4 pole connector. A second Speakon acts as a thru-put to allow multiple H-Amps to be used in tandem for larger groups such as orchestra or press conference.As with all Radial products, the H-Amp is able to handle the abusive environment of global touring. 14-gauge I-beam steel construction ensures maximum rigidity while the innovative book-end design creates a protective barrier around the switches, potentiometers and connectors. A full-bottom no slip pad provides mechanical isolation while providing plenty of 'stay put' for the most vibrant drum risers!The Radial H-Amp… now you can add a set of headphones to any situation with ease!Features:     Connect your headphones to any loudspeaker     Run a series of headphones from one amplifier     100% passive - does not require any local powering     Cost effective monitoring solution for large orchestras

The 2Control with its unique Crossfeed control allows to judge a stereo panorama on headphones just like with loudspeakers. The unit's concept is consequently based upon duality: Two channels, two sources, two loudspeaker sets, two headphones—2Control. The speakers and headphones monitoring center The 2Control combines loudspeaker and headphone monitoring in a compact, user-friendly and high quality control device. Control near-field monitors, full-range speakers and headphone monitoring for two listeners from one central unit! Analog volume control for your DAW A majority of D/A converters and sound cards provide nothing in the way of analog level monitoring control, and this means the necessity of varying signal levels at the converter outputs. The result is a lowered bit rate in the monitoring signal, which can lead to commensurate loss of audio quality.  Two excellent headphone amplifiers Friends, colleagues, customers: in the end there’s always someone else who wants to listen in, too. With the 2Control you also have the second headphone under control – and can rely on first-class quality. Crossfeed control With it's innovative crossfeed control, the 2Control allows to adjust the stereo width on headphones. Now headphone monitoring can be compared to speaker monitoring, making it possible to also mix on headphones. Extend the range of headphone applications Some exemplary benefits of the crossfeed control: at home, nocturnal engineers now have an alternative to full range monitors for judging stereo imaging in their mixes. Furthermore, the headphone monitoring is not restricted for analytical listening only, but can serve as full stereo monitoring alternative. And the compact housing makes it easy to transport the 2Control to have familiar monitoring conditions at foreign places. High-grade balancing stages We use custom made balancing stages to drive long distances reliably and for first class common mode rejection values. Note that only balanced connections exclude hum and interferences. We recommend to establish balanced connections wherever possible – especially connections over long distances (e. g. to speakers). Unbalanced connections (e. g. RCA, TS Jack) You can establish unbalanced connections easily and without adaptors – for example from CD-Players with RCA outputs or to (HiFi) power amplifiers with RCA inputs. It is important to pay attention to the correct polarity of the three XLR wires.Connections to RCA and TS Jack inputs or outputs are always unbalanced. Connections to TRS inputs or outputs may be balanced or unbalanced. In any case we recommend to use readily configured cables from XLR to the respective RCA or TS/TRS connector to dispense with adaptors. Ask your dealer for configured cables. With the XLR pin configuration diagram in our manuals any audio expert can ensure to select or configure appropriate cables. Separate mono speaker output In addition to two stereo speaker sets you can also connect a mono speaker or a subwoofer. Tip for working with headphones: Listen with subwoofer to enjoy the physical impact of the low end.

Speaker & Subwoofer You can listen to your production via two switchable pairs of speakers. A subwoofer is also switched on and off with speaker pair A. In the middle position of the switch, the speakers are switched off, which is convenient because you don’t have to turn the volume control back.   Two Stereo Inputs Two analog stereo inputs can be connected to the Control One for sources such as a DA converter, CD player, mixing console, synthesizer or analog tape machine/tape deck, which can also be listened to mixed together (1+2).   Line Out The selected input signal is output unchanged at the Line Out. This allows the Control One to be looped between devices without “losing” an output. If, for example, several people are to listen in via headphones, a headphone amplifier can simply be connected to the Line Out. You can also record the signal analog or send it to a mixer for further processing.   Three Monitoring Modes are offered by the Control One. In the middle is the default setting “Stereo”. To check the mono compatibility set the switch to “Mono”. The special feature is the channel swap function: L/R > R/L reverses the stereo image. L/R becomes R/L. This is especially important and extremely time-saving when you are searching your sound library for samples in video dubbing that should match a scene with direction of movement. If the direction is not correct, you usually have to load the sample into the DAW to switch channels before you can hear if the sample fits. With the L/R > R/L function this is no longer necessary. You can now simply swap the direction of movement while prelistening samples in the library.   The Headphone Power Amp Poor sound over headphones?Not enough juice? Not here. Control One delivers a rich headphone sound and it can get really loud. The output stage of the headphone amplifier is designed as a push-pull amplifier in class AB mode. The bipolar transistors share the amplification of the positive and negative half-waves, which produces a higher gain and a higher output voltage than in Class A operation, where only one transistor amplifies both half-waves. The output stage transistors are thermally coupled and thus run particularly coherently, which contributes to a consistent and stable sound image. The power supply has a buffer circuit with low source resistance, ensuring generous current reserves even when driving low-impedance headphones.   The Revolution in the headphone amplifier is the Phonitor Matrix, with adjustable crossfeed, thanks to which you can create mixes with headphones that sound the same on speakers. The Phonitor Matrix in its largest expansion stage has three parameters: Crossfeed, Speaker Angle and Center Level. In the Control One, the center level is preset to -1 dB and the speaker angle to 30°. These are the most commonly used values. The crossfeed function determines the so-called interaural level difference. The intensity of the crossfeed is fully variable. At the beginning of the control path the crossfeed circuit is not in the audio path. Dialing the control in switches on the crossfeed circuit via relay (hysteresis circuit). The audio signal therefore does not pass through the crossfeed stage if this is not desired.

The Phonitor 3 is the ultimate headphone amplifier and monitor controller with 120V technology. It delivers the same monitoring quality over speakers and headphones as the large SPL mastering consoles. The analog Phonitor Matrix allows mixing and mastering with headphones in the highest quality, providing the same spatial perception of the stereo stage as with speakers. Three analog XLR stereo inputs for various playback devices and extensive monitoring options make it the perfect monitor controller for demanding producers and mixing/mastering engineers. With the optional expansion rack, the Phonitor 3 gains a 19'' rack enclosure and three additional selectable stereo outputs for active speakers or power amplifiers.

Features: Kombination aus Kopfhörerverstärker, Monitor-Controller und Digital-Analog-Wandler (DAC) in einem Gerät Unterstützt digitale Eingangssignale bis zu 192 kHz/24 Bit über USB, AES/EBU, S/PDIF und Toslink Kann als USB-Interface für Computer-Audio-Streaming verwendet werden Integrierte Crossfeed-Funktion für eine realistischere Wiedergabe von Stereo-Aufnahmen 120-Volt-Technologie für eine hohe Ausgangsleistung und geringe Verzerrung Mono-Funktion zum Überprüfen der Phasenbeziehungen von Stereoaufnahmen Dual Source Mode ermöglicht das Umschalten zwischen zwei verschiedenen Signalquellen Benutzerdefinierte Klangregelung mit bis zu drei EQ-Bändern Großer Lautstärkeregler mit präziser Kanalverfolgung und großer Drehwinkel 2 Kopfhörerausgänge und 1 Line-Ausgang zum Anschluss von Aktivlautsprechern Möglichkeit zum Anschluss von bis zu 3 weiteren Kopfhörerverstärkern mit individueller Lautstärkeregelung (mit optionalem Expansion Rack)

The Design Of The Amplification Stages The Preamplifier Stage Two Burr-Brown OPA 2134 SoundPlus™ operational amplifiers provide the pre-amplification. These are specially designed for audiophile circuits and are characterized by extremely low noise and minimal distortion of only 0.00008%. Thanks to a true FET stage, the OPA 2134 achieves a slew rate of 20V/µs, making it a high-speed operational amplifier. This has an immediate positive effect on the liveliness of the playback. In addition, low capacitance film capacitors are installed in the signal path as bypass capacitors of the coupling capacitors, which ensures a more precise transmission of the high-frequency signal components. The excellent Panasonic ‘Electric Double Layer’ gold electrolytic capacitors are used as coupling capacitors. They offer the highest storage capacity of all capacitor technologies. The Power Amplifier The output stage of the headphone amplifier is designed as a push-pull amplifier in class AB mode. The bipolar transistors share the amplification of the positive and negative half-waves, which produces a higher gain and a higher output voltage than in Class A operation, where only one transistor amplifies both half-waves. The output stage transistors are thermally coupled and thus run particularly coherently, which contributes to a consistent and stable sound image. The power supply has a buffer circuit with low source resistance, ensuring generous current reserves even when operating low-impedance headphones.   The Revolution in the headphone amplifier is the Phonitor Matrix, with adjustable crossfeed, thanks to which you can create mixes with headphones that sound the same on speakers. The Phonitor Matrix in its largest expansion stage has three setting parameters: Crossfeed, Speaker Angle and Center Level.  In the Phonitor One, the center level is preset to -1 dB and the speaker angle to 30°. These are the most commonly used values. The crossfeed function determines the crosstalk of the channels, the so-called interaural level difference. The intensity of the crossfeed is fully variable.  At the beginning of the control path the function is not in the audio path. It is only switched on by adding it via relay (hysteresis circuit). The audio signal therefore does not pass through the crossfeed stage if this is not desired.

The Collaborator is a high-definition reference headphone amplifier system that’s built like a brick — house. It has four powerful analog high-definition headphone amplifiers in a solid steel enclosure. Included is a “HearMe” foldback mic. Each headphone amp has its own control and output. The external PSU delivers a healthy punch and copious headroom when needed.

MeMore is a Personal Monitor Mixer designed to provide an artist with complete, intuitive control of individual mixes. The absolute requirement: get a mix, always stay focused and in the groove. MeMore has no menus and no screens. Everything is on the front panel to be twisted or pushed - simple, intuitive and instant. 12 input channels: 8 Mono inputs and 2 Stereo for comprehensive channel count. 2 headphone amps with separate volume controls and they are LOUD! Built-in “HearMe” mic is used for the talkback channel and unique room mic foldback into the mix.