SimpleTuner/open-rvq-encoder-minimax-music3-169m-v4 (169M, causal depth decoder) fine-tuned from its final checkpoint on a pooled corpus 3.6x its original data: the original 2,837 train tracks + 8,122 tracks from Mothersuperior/minimax-music3-rvq-distill-corpus-8k. Architecture, loss (CE + 0.25 KL vs teacher top-50), muP config, and trainer unchanged — only the data. 12 epochs, lr 3e-4 polynomial, batch 64, single RTX PRO 6000, validated every 500 steps on the untouched 135-track holdout.

Raw eval outputs in evaluation/. Loading identical to the base model (trainer classes from SimpleTuner branch script/train-minimax-music-rvq-encoder, --depth_decoder topology). Use is subject to the MiniMax Music 3 model terms and the reverse-distillation dataset terms.