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## YS-Mobile Bass — a plugin for adapting bass to mobile devices

YS-Mobile Bass is a specialized tool for preparing bass lines for listening on smartphones, tablets, and other devices with a limited low-frequency range. The plugin helps preserve rhythmic clarity and bass body where low frequencies are inevitably lost, through harmonic adjustments in the lower midrange — without artificially boosting the low frequencies.

### Key Features

- **Bass Mono**: bass monophonization mode in the 20–250 Hz range. The control preserves the low-frequency component only in the center (mono) channel, removing it from the side channels. This improves bass stability and clarity on any playback system, including headphones and compact speakers. - **Harmonic switches for rhythmic support**:
- **63**: Adds a second harmonic to the center channel at ~126 Hz, -18 dB below the 63 Hz band. Helps preserve the rhythmic bass pattern on mobile devices.
- **125**: Adds a second harmonic to the center channel at ~250 Hz, -18 dB below the 125 Hz band. Improves rhythm intelligibility in low-frequency-limited environments.
- **250**: Adds a second harmonic at ~500 Hz, -31 dB below the 250 Hz band. Provides subtle lower-midrange support without overpowering the mix. - **Summary Energy Control**: When switches 63, 125, and 250 are simultaneously engaged, the overall energy in the lower midrange increases. For most applications, activating only one switch is sufficient—this avoids excessive density in this range.
- **Output Volume Fader (±6 dB) with VU metering (white LEDs)**: Fine-tune the final signal level. The VU scale helps keep the level within the "working zone" and avoid overloading later in the chain.
- **Harmonic Volume Fader (±6 dB) with VU metering (green LEDs)**: Separate control over the energy of the added harmonics. This allows for fine-tuning the "rhythmic signature"—either enhancing it in a dense mix or, conversely, making it barely noticeable.

### Usage Recommendations

- **Positioning in the Processing Chain**: The YS-Mobile Bass section should be placed **before** the overall saturation. This way, the harmonics added by the switches will be correctly processed by subsequent stages of the chain (including saturators), and will not be overloaded or masked.
- **Practical Approach**: Start with Bass Mono and one of the switches (63 or 125 are often optimal). Choose the combination by ear, focusing on the target playback system—for example, typical mobile speakers.
- **The Purpose of Harmonics**: It's important to understand that the added harmonic will, by default, be 18 dB below the target level. This means it won't add any "meat" to the midrange, but will merely provide a subtle rhythmic shadow. It's not about "making it tighter," but about "leaving a trace of rhythm" where phones can still hear something. Using the harmonic volume fader, you can carefully adjust this balance without ruining the original idea of ​​a subtle backing.
- **Working with levels**: Use the VU metering to keep the output level in a comfortable zone and not "stray" from the overall balance of the mix. White LEDs provide a clear picture of the main signal, while green ones separately indicate the contribution of harmonics, which is convenient for quick adjustments.
- **Compatibility with mixing techniques**: The plugin works well with approaches that emphasize a clear rhythmic foundation in the bass (including those stylistically close to folk rock and acoustically oriented mixes). It can be used as part of a mixing template, where levels and frequency accents are pre-calibrated to references.

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