The technique of routing a mixing board's outputs back into its own inputs and playing the resulting feedback as an instrument · with no recorded or played source, the desk feeds on itself, and the player shapes what it generates.
No-input mixing is the technique of patching a mixing board's outputs back into its own inputs, with nothing else connected, and playing the feedback the desk then generates as an instrument. There is no microphone, no recording, no played source: the only sound is the board feeding on itself, the signal looping through the channel strip and being amplified, coloured and re-amplified by the desk's own gain, EQ and faders. The mixer's manual usually warns against exactly this, because it produces feedback; the technique is the deliberate pursuit of what the manual forbids.
The technique was pioneered in Tokyo in the mid-1990s by Toshimaru Nakamura, a guitarist who had grown frustrated with the instrument and found, in the self-feeding desk, a sound that suited him better. By 1998 he had abandoned the guitar entirely, and his first solo album, simply titled No-Input Mixing Board, appeared in 2000. His account of the instrument is that it cannot be commanded so much as accompanied: the feedback has its own behaviour, and the player's job is to surrender to the system and shape what it offers rather than to impose a part on it. That posture, obedience to an indeterminate instrument, is central to how the technique is understood.
No-input mixing is bound up with the Tokyo onkyo movement, the scene that formed around the now-defunct Off Site venue in Shinjuku in the late 1990s and early 2000s. Onkyo (the word means something like the reverberation of sound) gathered Nakamura, the sampler-and-sine-wave player Sachiko M, the guitarist Taku Sugimoto, Tetuzi Akiyama and others into the most minimal of minimalist musics: performances so quiet that the footsteps and talk of passers-by would enter the piece as unplanned collaboration. The no-input desk, capable of the faintest high tones and shimmer, was one of onkyo's defining instruments.
The technique sits between two of the archive's forms. Toward F·13 Free improvisation, the no-input desk is an improviser's instrument: indeterminate, responsive, played in real time with no fixed material, and Nakamura's many duo recordings (with Keith Rowe, with Sachiko M, with players across the European improvising scene) place it firmly in that tradition. Toward F·08 Japanoise, the same desk pushed hard produces walls of feedback noise, and the technique is a controlled, instrument-scale relative of the audio feedback that the harsher Japanese noise tradition uses at full force. The desk can be played at either end of that range, which is why the file is cross-filed to both.
The relationship to feedback in general is worth stating. Audio feedback · the howl of an output fed back to an input · runs through the whole noise tradition, from the amplifier-and-microphone feedback of the loudest Hijokaidan and Incapacitants performances to the pedal-stack feedback of Merzbow. The no-input mixing board is the version of feedback that has been brought inside a single instrument and made playable: the same physical phenomenon, but routed, controlled and shaped at the scale of a desk rather than a room.
The technique's position in 2026 is established and worldwide. Because the only requirement is a compact analogue mixer and a few patch leads, it is one of the most accessible feedback instruments available, and a sizeable international practice has grown around it well beyond the Tokyo origin. The Bureau files the technique because it is a genuine instrument invented within the genre's own period and orbit, because it connects the archive's quietest (onkyo) and harshest (Japanoise feedback) territories through one piece of equipment, and because Nakamura's account of obedience to an indeterminate system is one of the clearer statements of how a great deal of the genre's electronic work is actually made.
The Bureau holds no-input mixing as a feedback-instrument technique native to the genre's own period, filed between free improvisation and Japanoise. Nakamura's mid-1990s origin and 2000 solo statement sit as the founding case; the onkyo movement is the scene that gave it context; the larger feedback tradition is the phenomenon it brings inside a single instrument. The file documents the desk that plays itself.
Filed by Bureau editor · VAGO · c. the Iron Age · last revised c. the Anthropocene