LF vs Speaker Booster

LF 专为岭枫 DSP 音频设备打造，让您轻松掌控音频体验。通过蓝牙无线连接，随时调整音效参数，打造专属听感。 · 实时监控 — 电量、CPU/内存使用率、充电状态一目了然，设备模式随心切换 · 个性定制 — 自定义设备名称，灵活配置各项参数 · 灯光控制 — RGB设备专属，颜色与灯效随心调节 · 专业调音 — EQ均衡器、动态压缩、虚拟低音增强等多维度音效调节，支持预设存储与设备同步，支持设备间导入导出功能，轻松分享配置文件

Volume maxed out and still hard to hear? Ampcrank is an audio-boosting player: import your music, podcasts, recordings, and voice messages, then make them louder and clearer with real volume gain and a full equalizer. VOLUME BOOST - 0 to +24 dB digital gain — turn the knob and hear the difference instantly - Built-in limiter keeps audio clean and distortion-free even at maximum boost - Live level meter and spectrum animation show the boost at work EQUALIZER - Vocal Booster: brings muffled, unclear speech into focus - Bass Boost: deeper, punchier low end - Podcast / Voice Memo: tuned for recordings and voice messages - 10-band manual EQ (31 Hz–16 kHz) with savable custom presets A COMPLETE LOCAL PLAYER - Import MP3, WAV, M4A, FLAC, and AAC from the Files app or iCloud Drive - Extract the audio track from MP4 videos - Receive audio files shared from other apps via the system share sheet - Background playback with Lock Screen and Control Center controls CLEAN AND SIMPLE - No account required; your audio files stay on your device and are never uploaded HOW IT WORKS Ampcrank enhances audio through digital signal processing (gain + EQ + limiting) applied to files played inside the app. It does not raise your iPhone speaker's hardware volume limit, and it does not amplify other apps, ringtones, or phone calls. AMPCRANK PRO - Boost audio all the way to +24 dB - Use the full 10-band equalizer - Unlock every preset, custom presets, and loop mode - Payment is charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in App Store settings. This app is using the standard Apple Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/