Yes, and if you have a choice, FLAC is the one to upload. FLAC is lossless: it compresses the file without discarding any audio, so the model trains on every detail the microphone captured. An MP3 or M4A of the same recording has already thrown some of that away permanently.
That said, format is the smallest of the three things that decide model quality. A noisy FLAC will lose to a clean MP3 every time. Lossless only helps when the recording underneath it is already good.
Active trainings
Selected job
Training details
Working
Model—
Training strength—
Elapsed time—
Stage 1 of 6Receiving audio
Epoch 0 of 2000%
Epoch progress comes directly from the running RVC trainer.
The audio you sent
PTH
Latest training checkpoint
An inference-ready early model is available while training continues.
Your first training is free - then pay only for the cloud training you use. Every account also includes five voice-conversion download minutes.
Your first training is free. After that, one subscription covers every tool on this page with nothing to meter - and every model you train is still a file you download and keep. Cancel any time; it stays yours.
Up to 500 epochs for every balance-funded training.
An exact quote first based on your audio and selected epochs.
Training balance
Pay only when you train
One balance for every NiceVois training — voice models and image models alike. Your balance never expires. For more voice-conversion downloads, choose a monthly plan below.
20% off your first balance purchase. Applied automatically at checkout.
Free to start
Your first training
$0with a free account
Create a free account and your first voice training is free. It also comes with five voice-conversion download minutes, and ten minutes each on the stem separator, noise remover and reverb remover.
Checking eligibility...Taster pack
$5 training balance
$4.99$4.99non-expiring
One-time, not a subscription. At current quotes, $5 covers up to 11 one-minute tests at 100 epochs, 4 five-minute runs at 180 epochs, or 2 ten-minute runs at 180 epochs. The exact cost and balance left are shown before training.
Starter pack
$10 training balance
$8.99$8.99non-expiring
Pay different amounts for short tests and longer, stronger training.
Best value
$27.50 training balance
$24.99$24.99includes $2.51 extra
Best for creators training several voices or comparing epoch settings.
Monthly conversion plans
More voice-conversion download minutes
Use the included free minutes first. Subscribe only when you need more conversion downloads; monthly plans also include renewable training credit.
Pricing
Pay once, or subscribe
Buy one training or three, with nothing to cancel. The monthly plan covers every tool if you use them often.
25% off your first month. Regular monthly price after that.
Train one voice
$5.00once
One training run, any length, up to the full epoch range. Five minutes of conversion downloads included. No subscription, nothing to cancel.
Train three voices
$10.00once
Three training runs, any length, up to the full epoch range. Fifteen minutes of conversion downloads included. No subscription, nothing to cancel.
Unlimited everything
Every tool, one price
$20.00$20.00per month
Then $20.00 per month.
Every tool, unlimited: voice training, voice conversion, stem separation and cleanup.
Starter
For occasional projects
$8.99$8.99per month
Then $8.99 per month.
$5 monthly training credit and 30 voice-conversion download minutes.
Creator
For regular cover makers
$14.99$14.99per month
Then $14.99 per month.
$10 monthly training credit and 90 voice-conversion download minutes.
Pro
For high-volume work
$24.99$24.99per month
Then $24.99 per month.
$20 monthly training credit and 240 voice-conversion download minutes.
Secure checkout by Lemon SqueezyCancel any time from your accountYour model files are yours to keep
Before you pay
Do I need an account to pay?
No. Pay with any email. Sign in with that same email on any device and everything you paid for is there.
What does unlimited actually mean?
No minutes to count on any tool, every output included, up to 500 epochs per training run. Fair use applies.
How do I cancel?
One click from your account, no email needed. You keep everything until the end of the month you paid for.
What if a training fails?
You are not charged for it. A failed or cancelled run releases what it reserved, and an upload that never arrives does not spend your free run.
Who sees my card?
Lemon Squeezy, the merchant of record. NiceVois never sees card details, and tax is handled at checkout.
Do I keep my voices if I leave?
Yes. Every model is a .pth, .index and ZIP you download, and they work anywhere RVC runs.
What happens to my audio?
It is processed for your job and never shared. Source audio is removed after validation; finished models stay until you delete them.
Can I hear it before I pay?
Yes. Your first training is free, and every finished model comes with a listening proof before you decide anything.
Wrong charge or an unused month? Email info@nicevois.com with the checkout email and date; it is reviewed with Lemon Squeezy and returned to the original payment method. Refund policy · Privacy
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Persistent cloud storage
Your model library
Your voice models are files you own. Download them once and no platform can take them away.
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Finished model packages stay saved until you delete them.
Your .pth, .index, ZIP, and private listening preview remain available after closing the browser or restarting your computer. Full-resolution source audio and temporary training files are removed after validation.
— used
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What actually decides quality, in order
Format matters least. Spend your effort in this order:
One speaker, cleanly recorded. Other voices, music, and room noise all become part of what the model learns.
Enough material. Several minutes of varied speech beats a single perfect sentence.
Consistent capture. One microphone, one room, one distance.
Then the format - where FLAC is the best available answer.
When FLAC does not help
Converting a lossy file into FLAC does not restore anything. An MP3 exported to FLAC is still an MP3 underneath - the file grows, the audio does not improve, and the upload simply takes longer. Only use FLAC when it came from a lossless original.
What the service does with the FLAC
The official RVC training workflow reads supported source audio through FFmpeg, decodes it into the representation preprocessing requires, and extracts the features used for training. NiceVois runs that workflow in a pinned cloud environment and validates the exported model before showing the downloads. FLAC needs no preparation on your side.
FLAC versus the alternatives
Question
FLAC
MP3 / M4A
Can this tool upload it?
Yes
Yes
Compression
Lossless - nothing is discarded
Lossy - detail is permanently removed
Typical source
Studio capture, archival rip, DAW export
Phone, download, messaging app
File size
Large
Small
Best choice
Use whenever you have it
Use when it is the cleanest original you own
What you receive
The finished model is available as a named .pth, a matching .index, and a ZIP containing both. The public workspace retains the completed files for the displayed seven-day window, and you can delete an inactive job from your private model library at any time.
Have a lossless recording?
FLAC is the strongest source you can hand a voice model. Upload it directly.