Seedling Studio • Premium audio architectureAdvanced Android audio processing.
Engineered as one native signal path.
Premium's sound system is a coordinated processing graph owned by Seedling. Audio is processed in the player's native PCM path, with the signal chain, output policy and diagnostics designed together so the controls behave as one engine rather than unrelated vendor effects.
For listeners who want more than a basic Android equalizer, Premium brings up to 20-band parametric EQ, ReplayGain, headphone crossfeed, convolution/FIR, Hi-Res processing, resampling, dithering and output diagnostics into one integrated signal path.
≋Graphic EQ + up to 20-band parametric EQ
Use the quick five-band Studio curve or build a detailed PEQ with Bell, shelf, low-pass, high-pass, notch and band-pass filters. Each PEQ band can target stereo, left or right channels, with frequency, gain and Q control plus preamp and automatic headroom management.
20 filters max7 filter typesL / R / StereoAuto preamp
◒Bass, Spatial 3D and Seedling reverb
Dedicated low-frequency enhancement, adjustable spatial soundstage processing and an app-owned ambience engine with room size, decay, damping, pre-delay, diffusion and wet/dry control.
BassSpatial 3DReverb
↕ReplayGain with clipping protection
Track or album ReplayGain can normalize listening levels using metadata-aware gain, optional preamp and peak-based clipping prevention—integrated into the same processing graph.
TrackAlbumPrevent clipping
◖Headphone crossfeed
Blend controlled opposite-channel energy with adjustable strength, cutoff and delay to soften extreme hard-panning and create a more loudspeaker-like stereo image for headphones.
NaturalStudioSpeaker-like
⌁Convolution / FIR impulse processing
Load an impulse response into Seedling's convolution engine, control the mix and process it as part of the realtime native path. The engine also tracks convolution latency as part of playback topology.
Impulse responseFIRLatency-aware
◇Hi-Res processing and output policy
Choose native rate, 2×, 4×, 8× or maximum-supported upsampling, select resampler quality, prefer float PCM output and choose TPDF or noise-shaped dithering. Bit-perfect mode is reported only when Android accepts an exact final-PCM output match on a supported route.
Hi-ResFloat PCM96-tap audiophile SRCDither
A/BStudio bypass and profiles
Compare processed and original signal with A/B bypass, save the larger Studio state as profiles, and recall sound choices without rebuilding them every session.
▥Live DSP diagnostics
Premium can inspect the active native signal path: processor activity, RMS differences, limiter reduction, applied settings, resampler state and convolution status. It is engineered to verify what the engine is actually doing, not merely what a switch says.