• V 16 SE - Line Integrated Headphone Amplifier (Each)
      • V 16 SE - Line Integrated Headphone Amplifier (Each)
      • V 16 SE - Line Integrated Headphone Amplifier (Each)


      Octave V 16 SE - Line Integrated Headphone Amplifier (Each)



        In stock (0) - 15 - 30 days Available in store: Check availability

        The founding principle at OCTAVE has always been to apply modern innovations to classic tube technology. Questions about our high-end audio equipment? Please call us at (702) 910-4913, or contact us via chat.

        Product description

        A Pure, Modern Classic Amplifier in Every Regard.

        OCTAVE technology entails a further developed tube amplifier topology utilizing an innovative, independent approach until the traits that correspond to the company philosophy are achieved: powerful dynamics, low noise, wide bandwidth, incredible stability, extended lifetime, and comprehensive safety. For over 30 years now, OCTAVE has exclusively crafted high-end amplification products that have fully embodied these aforementioned characteristics. The OCTAVE approach has been market proven and validated, and no other audio company has achieved what OCTAVE has accomplished in this regard.

        The time has now come for OCTAVE to apply the company's exclusive amplifier technologies to a single-ended design, as this circuitry is desirable for its natural audio reproduction and is capable of realizing clear sonic benefits that are particularly ideal for high-efficiency loudspeakers as well as for headphones. Single-ended amplifiers possess a naturally harmonic sonic signature and offer an extremely lucid midrange, as the music signal is not split and thus no crossover distortions of the positive and negative half-waves arise.

        Developing a single-ended Class A circuitry presented a unique challenge for OCTAVE: how to fully overcome the disadvantages of this amplifier principle while bringing its sonic benefits to the forefront.

        OCTAVE applied its myriad technical innovations and proprietary output transformer technology to develop a sophisticated new amplifier to meet this challenge: The result is the all-new OCTAVE V 16 Single Ended Single Ended integrated amplifier, the company's first ever single-ended design.

        While the natural sonic character and midrange clarity of the single-ended circuit is uniquely desirable, there are also some known limitations to the single-ended amplifier topology that needed to be addressed:

        1. Level reduction in the bass frequencies – OCTAVE has eliminated this problem inherent in single-ended amplifiers via a new, highly specialized magnetic-field compensated output transformer. OCTAVE is renowned for its proprietary transformer designs which are developed, wound and meticulously crafted in-house. The power bandwidth in the bass frequencies of the OCTAVE V 16 Single Ended remains linear up to 10 Hz as a result of this customized transformer design.

        2. Level reduction in the high frequency range and limited bandwidth - By means of specific driver stages and an optimization of the feedback, OCTAVE has been able to extend the bandwidth of the OCTAVE V 16 Single Ended from 10 Hz to 100 kHz, a bandwidth spec that was previously considered impossible to achieve from a single-ended amplifier design.

        3. Relatively high residual noise in the loudspeaker output - The level of hum in the OCTAVE V 16 Single Ended was rendered virtually immeasurable via OCTAVE's optimized positioning of the mains transformer in respect to the output transformer, which also negates the need for an outboard power supply. The company's sophisticated electronic stabilization circuits serve to further ensure that any sources of noise or hum is eliminated.

        The low-frequency noise level achieved at the loudspeaker as well as the headphone outputs is in the range of – 110 dB / 1W at 8 ohms, which corresponds to approximately 15 – 20 μV at 50 Hz.

        4. High temperatures during high-current rest in Class-A operation – Most single-ended Class-A amplifier designs are extremely inefficient, typically idling between three to five times the output power. Thus these devices become very hot during normal operation.

        A. The OCTAVE V 16 Single Ended single-ended amplifier utilizes an adaptive three-step setting of the Class A mode. The Class A Level is automatically adjusted between 100% and 35% to the load profile of the loudspeaker ( 4/8 hms ) and headphones, which considerably reduces the amplifier's operating temperature, while significantly extending its lifespan as well.

        B. In addition, the OCTAVE V 16 Single Ended features a unique version of OCTAVE's energy-saving "Ecomode" technology, which serves to reduce the Class-A level to 35% during pauses in the music signal, and inaudibly rises when a musical signal is once again present.

        5. Disadvantages of expensive, directly heated triodes - OCTAVE has developed the OCTAVE V 16 Single Ended to operate a KT 120 pentode tube in a triode circuit. It is ideally suited for Single Ended Class A operation due to its particular characteristics: very high performance, excellent longevity, tight tolerances, and widespread availability – while avoiding the technical problems of a traditional triode tube such as the 300 B. The OCTAVE OCTAVE V 16 Single Ended architecture will thus also allow the use of KT 150, KT 88, or 6550 tubes, for example, making its design extremely universal.

        OCTAVE has also equipped the V16 Single Ended with an optional Pre-Out feature. While adding complexity, this option affords great flexibility. Thus the V 16 Single Ended is a perfect companion to myriad system setups, and can be used to drive headphones, high efficiency loudspeakers, hybrid systems ( with active bass ), or in conventional bi-amp setups. An equalizer is used to cut the deep bass frequencies (below 80 Hz), so the V 16 Single Ended is only responsible for the midrange and treble. The frequency range is optimized by Octave and thus not adjustable. One primary benefit in the case of bi-amping is to take advantage of the breathtakingly beautiful single ended performance in the sensitive mid and high frequency range while employing a separate power amp ( or internal amp in the speaker ) to handle the bass region.

        The long development time of the OCTAVE OCTAVE V 16 Single Ended has surely paid off: an uncompromising single-ended Class A integrated amplifier that delivers ultra-quiet operation highlighted by deep bass, a natural midrange and silky-smooth highs combined with an unsurpassed degree of reliability and longevity.

        Octave V16 SE Line Integrated Headphone Amplifier User's Manual


        Basic Model V 16 Single Ended
        Tube Complement 
        2 x KT120
        Design Ice Grey, Metallic Black and Ocean Blue

        Pre-Out ( only ex factory )
        Black-Box and Super Black Box


        Frequency Response

        10 Hz - 80 kHz @ 5 W 0 / -3 dB

        Total Harmonic Distortion
        0,5% bei 3 W an 4 Ohm
        Signal-to-Noise Ratio
        - 110 dB / 8 W
        Load Impendance Loudspeaker
        3 - 32 Ohm ( BIAS High - Low )
        Load Impendance Headphone
        6 - 2000 Ohm ( OUT Low - High )
        26 dB

        Inputs: 2 x Line Level / RCA

        1 x XLR Line Level

        Outputs: 1 x Loudspeaker output

        1 x Headphone output 6.3 mm jack

        1 x Headphone output 4 pin XLR

        1 x Regulated preamplifier output RCA (optional only ex factory)


        ECO Mode, Power Management

        Input Sensitivity400 mV
        Input Impedance50 kOhm / Cinch, 25kOhm / XLR
        Crosstalk left/right40 dB
        Crosstalk Input/Input> 90 dB
        Output Impedance Pre Out40 Ohm
        Max. Level Pre Out5 V RMS
        Tube Complement Preamplifier1 x ECC 82, 2 x EF 800
        General Facts 
        Power Comsumption
        120-200 W idle, 200 W @ full power
        Weight19 kg
        Standard Accessory
        Power cord, IR-Remote Control, Allen key for removing the cover 
        Main Fuse
        230/240 V main: 2,5 A slow-blow type H 
         Dimensions (in mm)


        Regulated preamplifier output – Pre-Out

        It is not possible to upgrade a V 16 Single Ended without the option Pre-Out to the version with Pre-Out. This decision must be made when the device is purchased.

        The option regulated Pre-Out allows you to use an active Subwoofer or bi-amping if the loudspeaker is constructed for bi-amping.

        The Pre-Out has an internal output circuit with a low output resistance. The length of the cable to the external unit is therefore not an issue. Furthermore the output amplifier eliminates interferences of the cable and the connected unit that would otherwise affect the sound of the V 16 Single Ended. The output amplifier is designed for the highest sound quality and matches with the sound of the V 16 Single Ended.

        The Option Pre-Out comes with an innovative additional function. This is the filter function for the V 16 Single Ended output stage. It is easy to understand that it makes no sense to burden the V 16 Single Ended with the whole frequency response when the bass part is applied to the external power amplifier or subwoofer. Low frequencies with a high level are limiting the output power of a single ended amplifier as well as any other power amplifier with an output transformer. To avoid this unnecessary stress we added a filter to get rid of the frequencies below 80 Hz. The filter is flat down to 80 Hz / -3 dB. This low roll off frequency does not affect the middle- and high-frequency sound characteristics.

        Frequency response of the V 16 with and without the low frequency filter


        As a result of this filter design the dynamics and the undistorted output power of the whole bi-amping configuration increases by a multiple. The sound of the midrange also benefits from this technology - this is the most important aspect. The filter can be set ON or OFF with jumpers inside the V 16. If a headphone is active the filter is bypassed automatically. But in both cases the Pre-Out is always active.


        Bi-amped system with the "Level Adjustor"

        Selecting a power amplifier with a level regulator or selecting a power amplifier that has the same gain or input sensitivity as the power output amplifier in the V 16 Single Ended is hard to find – or more or less impossible. For this reason we offer an external box: The Level Adjustor optimized for stereo power amplifiers. This small additional unit allows you to adjust the bass level precise to the level of the V16 Single Ended output stage, thus resulting in a homogenous sound. For technical reasons the Level Adjustor must have a short signal connection to the external power amplifier. This way, the cable length between the V 16 Single Ended to the Level Adjustor, respectively the power amplifier is not critical. Up to 3 meters is not an issue. The output signal cables to the power amplifier are permanently attached to the Level Adjustor. The Level Adjustor has a channel match of 0.2 dB in the entire setting range.

        Bi-Amping Setup with "Level Adjustor"

        Black Box Connector

        OCTAVE, with the Black Box technology, offers an upgrade path for optimizing the OCTAVE amplifier in respect to the speaker. This flexibility is a unique feature of the OCTAVE brand.
        The dynamic and tonal stability of an amplifier is strongly dependent upon the stability and capacity of the power supply, therefore the Black Box and Super Black Box were developed as external upgrades to the OCTAVE amplifiers' power supply storage capacitors by increasing their capacitance by a factor of 4 (Black Box) or 10 (Super Black Box), respectively. This is a tremendous benefit if the speaker is difficult to drive. Loudspeaker efficiency is made less critical, while the amplifier is enabled to handle speakers with extremely low minimum impedances.

        Power Management and Protection System

        The device is equipped with a multi-stage Soft-Start/Turn-On protection circuit which extends component as well as tube life considerably by protecting against stress caused by typical high inrush currents during switch-on. The unit starts in a defined sequence, with the Protection System monitoring the integrated amplifier completely, and activated whenever a malfunction is detected. Once the Protection is activated, the device is powered down.

        Frequency Response with and without the Subsonic-Filter

         Single ended amplifier designs are sensitive in respect of extremely low frequencies below 20 Hz.
        Such low frequencies can occur during analog playback and in blockbuster soundtracks. Therefore
        the subsonic filter prevents distortions caused by low level signals. The subsonic filter is a second
        order filter design, cutoff frequency is 22 Hz / - 3 db.

        Contact us to inquire how you can finance your purchase through our partner, Synchrony.

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