New tricks for an old favourite.

The big waveform in RGB colours, as on newer Pioneer players, instead of plain blue — and the whole-track overview at the bottom as a warm red-to-white gradient, so drops and breaks stand out.

• StockBlue waveform, flat blue overview.
• ModdedRGB waveform, red-to-white overview.

The BPM to two decimals: the tenths move into a small digit above, the hundredths take the place below — handy for matching tempos by ear and by eye.

• StockBPM to one decimal.
• ModdedBPM to two decimals, stacked.

A two-line phase meter instead of the four boxes: orange for the master, blue for this deck, each with a marker that sweeps along the bar. Switched in UTILITY, where the rarely used SLIP FLASHING item becomes PHASE METER.

• StockFour boxes; UTILITY › SLIP FLASHING.
• ModdedTwo lines with markers; UTILITY › PHASE METER picks the meter.

Memory cues take the colour you gave them in rekordbox. The hot cues stored on the USB (A–H) appear as lettered boxes in their rekordbox colour on the overview and the big waveform — the stock 900NXS ignores them completely.

• StockEvery memory cue a red triangle; hot cues not shown.
• ModdedMemory cues in rekordbox colours; hot cues as coloured A–H boxes.

Play your rekordbox hot cues on the deck. A short press of QUANTIZE switches the hot key mode; the top three BEAT DIVIDE keys become hot cues A–C. After a track loads they are buffered in the background, so each starts at once — also from a pause, in CDJ and VINYL mode. Hold for a gate, set new ones while paused, delete them with DELETE; changes are saved on the USB with colours (A green, B orange, C blue).

• StockNo hot cues on the 900NXS; BEAT DIVIDE keys only for loops.
• ModdedHot cue mode: play, gate, set, delete on the BEAT DIVIDE keys; QUANTIZE still works when held.

TRACK SEARCH ◀◀ / ▶▶ jumps 1, 2, 4 or 8 beats along the rekordbox beat grid instead of changing the track — at once, without a gap and in phase with the other deck, as on the newest players. Chosen in UTILITY › BEAT JUMP (default 4 beats, kept when the player is off). Works playing, paused and at the cue. The jump is made in the audio the player has already decoded; a press it cannot jump yet (clicked very fast with 8 beats) is simply ignored instead of running the player dry.

• StockTRACK SEARCH goes to the previous / next track.
• ModdedWhole bars (4, 8) or beats (1, 2) forward and back, the phase meter stays where it was.

When the screen saver dims the display, the deck comes alive: the BEAT DIVIDE keys fade in a wave, SYNC and MASTER pulse against each other, the transport keys light one after another and the jog's three rings run inner, middle, outer and back — a loop of about four and a half seconds. Any key ends it. UTILITY › LED ANIMATION, on from the first start.

• StockThe screen saver only dims the display.
• ModdedButton LEDs and jog rings animate while it is dimmed.

Every track's key in one notation, whatever rekordbox exported: Camelot (8A), Open Key (1m) or classic (Am), chosen in UTILITY › KEY NOTATION. The player converts on its own with a table of all spellings, sharps and flats included — on the main screen, in INFO and in BROWSE › KEY. The key shows in the colour of its place on the Camelot wheel.

• StockThe key as rekordbox's export setting wrote it.
• ModdedOFF, CAMELOT (default), OPEN KEY or CLASSIC — the same notation on every stick, in its wheel colour.

The boot screen tells you what you are running: Pionaarr Mods 1.0 instead of Ver 1.31. Leave it out to keep the stock text.