AceStep_Refine_Redmond

I'm grateful for the GPU time from Redmond.AI that allowed me to make this model!

Prompt

Showcase reel

Overview

AceStep_Refine_Redmond is a DPO-refined LoRA adapter for ACE-Step 1.5 Turbo, focused on improving musicality, arrangement coherence, and vocal character in practical generation workflows.

This release includes:

• standard/ (PEFT adapter for regular ACE-Step loading)
• comfyui/ (single-file ComfyUI-compatible LoRA export)

Compatibility

• DiT used: acestep-v15-turbo
• Recommended LM for prompting/composition: acestep-5Hz-lm-4B
• standard/ works in regular ACE-Step workflows.
• comfyui/ is the converted single-file LoRA for ComfyUI.

What Changed vs Base

In blind A/B testing against the base reference, this refinement achieved about 70% win rate. The blind test votes were collected from different users.

Training summary (final DPO refinement stage):

• Base checkpoint: acestep-v15-turbo
• Adapter type: LoRA
• Rank / Alpha: 96 / 192
• Learning rate: 8e-5
• Training path: large-dataset LoRA fine-tune for 75 epochs, then DPO refinement on top of that adapter
• Epoch config: up to 81 in the DPO stage (resumed from the previous epoch-75 adapter)

Known Limitations

• Behavior can still vary by prompt style; some sparse prompts may produce less stable vocal timbre.
• Very dense arrangements can introduce texture noise or high-frequency harshness in some generations.
• This adapter is tuned on a specific preference dataset and may not generalize equally across all genres.

Responsible Use

• Do not use this model to imitate or impersonate real artists without permission.
• Respect copyright, voice rights, and local regulations when generating and publishing audio.
• Review outputs before public release, especially in commercial workflows.