diff --git a/fluxer_app/src/features/voice/components/CallVolumeControl.tsx b/fluxer_app/src/features/voice/components/CallVolumeControl.tsx
index 7d5837954..d06dc1c5d 100644
--- a/fluxer_app/src/features/voice/components/CallVolumeControl.tsx
+++ b/fluxer_app/src/features/voice/components/CallVolumeControl.tsx
@@ -9,6 +9,7 @@ import {
 } from '@app/features/voice/components/CallVolumeState';
 import {MediaVerticalVolumeControl} from '@app/features/voice/components/media_player/components/MediaVerticalVolumeControl';
 import VoiceSettings from '@app/features/voice/state/VoiceSettings';
+import {VOICE_VOLUME_MAX_SLIDER_VOLUME} from '@app/features/voice/utils/VoiceVolumeUtils';
 import {observer} from 'mobx-react-lite';
 import type React from 'react';
 import {useCallback, useEffect, useRef} from 'react';
@@ -30,7 +31,9 @@ export const CallVolumeControl: React.FC<CallVolumeControlProps> = observer(func
 		lastNonZeroVolumeRef.current = resolveLastNonZeroCallVolume(outputVolume, lastNonZeroVolumeRef.current);
 	}, [outputVolume]);
 	const handleVolumeChange = useCallback((volume: number) => {
-		VoiceSettingsCommands.update({outputVolume: sliderVolumeToCallVolumePercent(volume)});
+		const nextPercent = sliderVolumeToCallVolumePercent(volume);
+		if (nextPercent === VoiceSettings.outputVolume) return;
+		VoiceSettingsCommands.update({outputVolume: nextPercent});
 	}, []);
 	const handleToggleMute = useCallback(() => {
 		VoiceSettingsCommands.update({
@@ -41,6 +44,7 @@ export const CallVolumeControl: React.FC<CallVolumeControlProps> = observer(func
 		<MediaVerticalVolumeControl
 			volume={callVolumePercentToSliderVolume(outputVolume)}
 			isMuted={outputVolume === 0}
+			maxVolume={VOICE_VOLUME_MAX_SLIDER_VOLUME}
 			onVolumeChange={handleVolumeChange}
 			onToggleMute={handleToggleMute}
 			iconSize={iconSize}
diff --git a/fluxer_app/src/features/voice/components/CallVolumeState.test.ts b/fluxer_app/src/features/voice/components/CallVolumeState.test.ts
index e47d1381b..d5206bde1 100644
--- a/fluxer_app/src/features/voice/components/CallVolumeState.test.ts
+++ b/fluxer_app/src/features/voice/components/CallVolumeState.test.ts
@@ -23,6 +23,11 @@ describe('callVolumePercentToSliderVolume', () => {
 	it('clamps negative percent to zero', () => {
 		expect(callVolumePercentToSliderVolume(-10)).toBe(0);
 	});
+
+	it('reaches the boosted ceiling and clamps past it', () => {
+		expect(callVolumePercentToSliderVolume(200)).toBe(2);
+		expect(callVolumePercentToSliderVolume(250)).toBe(2);
+	});
 });
 
 describe('sliderVolumeToCallVolumePercent', () => {
@@ -34,7 +39,12 @@ describe('sliderVolumeToCallVolumePercent', () => {
 
 	it('clamps out-of-range slider values', () => {
 		expect(sliderVolumeToCallVolumePercent(-0.5)).toBe(0);
-		expect(sliderVolumeToCallVolumePercent(2)).toBe(100);
+		expect(sliderVolumeToCallVolumePercent(2.5)).toBe(200);
+	});
+
+	it('maps the boosted range above unity', () => {
+		expect(sliderVolumeToCallVolumePercent(1.5)).toBe(150);
+		expect(sliderVolumeToCallVolumePercent(2)).toBe(200);
 	});
 
 	it('falls back to the default for non-finite input', () => {
@@ -70,3 +80,18 @@ describe('resolveCallVolumeMuteToggle', () => {
 		expect(resolveCallVolumeMuteToggle(0, 0)).toBe(CALL_VOLUME_DEFAULT_PERCENT);
 	});
 });
+
+describe('call volume round trip', () => {
+	it('preserves a stored boosted volume through the slider', () => {
+		expect(sliderVolumeToCallVolumePercent(callVolumePercentToSliderVolume(200))).toBe(200);
+	});
+
+	it('steps a boosted volume down by one keyboard step instead of collapsing to unity', () => {
+		expect(sliderVolumeToCallVolumePercent(Math.max(0, callVolumePercentToSliderVolume(200) - 0.1))).toBe(190);
+	});
+
+	it('restores a boosted volume after a mute toggle', () => {
+		expect(resolveCallVolumeMuteToggle(200, 200)).toBe(0);
+		expect(resolveCallVolumeMuteToggle(0, resolveLastNonZeroCallVolume(0, 200))).toBe(200);
+	});
+});
diff --git a/fluxer_app/src/features/voice/components/CallVolumeState.ts b/fluxer_app/src/features/voice/components/CallVolumeState.ts
index e4ce76a70..ec13ba285 100644
--- a/fluxer_app/src/features/voice/components/CallVolumeState.ts
+++ b/fluxer_app/src/features/voice/components/CallVolumeState.ts
@@ -1,20 +1,24 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
+import {VOICE_VOLUME_MAX_PERCENT} from '@app/features/voice/utils/VoiceVolumeUtils';
+
 export const CALL_VOLUME_DEFAULT_PERCENT = 100;
-export const CALL_VOLUME_SLIDER_MAX_PERCENT = 100;
+export const CALL_VOLUME_UNITY_PERCENT = 100;
+export const CALL_VOLUME_SLIDER_MAX_PERCENT = VOICE_VOLUME_MAX_PERCENT;
 
 export function callVolumePercentToSliderVolume(percent: number): number {
 	if (!Number.isFinite(percent)) {
-		return CALL_VOLUME_DEFAULT_PERCENT / CALL_VOLUME_SLIDER_MAX_PERCENT;
+		return CALL_VOLUME_DEFAULT_PERCENT / CALL_VOLUME_UNITY_PERCENT;
 	}
-	return Math.max(0, percent / CALL_VOLUME_SLIDER_MAX_PERCENT);
+	const clamped = Math.max(0, Math.min(CALL_VOLUME_SLIDER_MAX_PERCENT, percent));
+	return clamped / CALL_VOLUME_UNITY_PERCENT;
 }
 
 export function sliderVolumeToCallVolumePercent(volume: number): number {
 	if (!Number.isFinite(volume)) {
 		return CALL_VOLUME_DEFAULT_PERCENT;
 	}
-	const percent = Math.round(volume * CALL_VOLUME_SLIDER_MAX_PERCENT);
+	const percent = Math.round(volume * CALL_VOLUME_UNITY_PERCENT);
 	return Math.max(0, Math.min(CALL_VOLUME_SLIDER_MAX_PERCENT, percent));
 }
 
diff --git a/fluxer_app/src/features/voice/components/VoiceCallView.tsx b/fluxer_app/src/features/voice/components/VoiceCallView.tsx
index 32342d1fd..8b92ab83b 100644
--- a/fluxer_app/src/features/voice/components/VoiceCallView.tsx
+++ b/fluxer_app/src/features/voice/components/VoiceCallView.tsx
@@ -68,6 +68,7 @@ import VoiceCallLayout from '@app/features/voice/state/VoiceCallLayout';
 import {hasValidRoomForVoiceCallContext} from '@app/features/voice/utils/VoiceCallContext';
 import {VOICE_CALL_DESCRIPTOR} from '@app/features/voice/utils/VoiceMessageDescriptors';
 import {parseVoiceParticipantIdentity} from '@app/features/voice/utils/VoiceParticipantIdentity';
+import {VOICE_VOLUME_MAX_SLIDER_VOLUME} from '@app/features/voice/utils/VoiceVolumeUtils';
 import {ME} from '@fluxer/constants/src/AppConstants';
 import {msg, plural} from '@lingui/core/macro';
 import {useLingui} from '@lingui/react/macro';
@@ -620,6 +621,7 @@ const VoiceCallViewInner = observer(
 								<MediaVerticalVolumeControl
 									volume={focusedStreamVolume / 100}
 									isMuted={isFocusedStreamMuted}
+									maxVolume={VOICE_VOLUME_MAX_SLIDER_VOLUME}
 									onVolumeChange={handleFocusedStreamVolumeChange}
 									onToggleMute={handleFocusedStreamToggleMute}
 									iconSize={18}
diff --git a/fluxer_app/src/features/voice/components/media_player/components/MediaVerticalVolumeControl.tsx b/fluxer_app/src/features/voice/components/media_player/components/MediaVerticalVolumeControl.tsx
index bc9842ebb..f6dd34d70 100644
--- a/fluxer_app/src/features/voice/components/media_player/components/MediaVerticalVolumeControl.tsx
+++ b/fluxer_app/src/features/voice/components/media_player/components/MediaVerticalVolumeControl.tsx
@@ -48,6 +48,7 @@ interface MediaVerticalVolumeControlProps {
 	iconSize?: number;
 	className?: string;
 	position?: 'above' | 'below';
+	maxVolume?: number;
 }
 
 function getVolumeIcon(volume: number, isMuted: boolean) {
@@ -73,6 +74,7 @@ export function MediaVerticalVolumeControl({
 	iconSize = 18,
 	className,
 	position = 'above',
+	maxVolume = 1,
 }: MediaVerticalVolumeControlProps) {
 	const {i18n} = useLingui();
 	const buttonRef = useRef<HTMLButtonElement>(null);
@@ -178,9 +180,9 @@ export function MediaVerticalVolumeControl({
 	}, [isDragging, scheduleClose]);
 	const handleSliderValueChange = useCallback(
 		(nextValue: number) => {
-			onVolumeChange(Math.max(0, Math.min(1, nextValue / 100)));
+			onVolumeChange(Math.max(0, Math.min(maxVolume, nextValue / 100)));
 		},
-		[onVolumeChange],
+		[maxVolume, onVolumeChange],
 	);
 	const handleSliderInteractionChange = useCallback(
 		(nextIsDragging: boolean) => {
@@ -209,7 +211,7 @@ export function MediaVerticalVolumeControl({
 				case 'ArrowRight':
 					e.preventDefault();
 					e.stopPropagation();
-					newVolume = Math.min(1, volume + step);
+					newVolume = Math.min(maxVolume, volume + step);
 					break;
 				case 'ArrowDown':
 				case 'ArrowLeft':
@@ -228,7 +230,7 @@ export function MediaVerticalVolumeControl({
 			}
 			onVolumeChange(newVolume);
 		},
-		[volume, onVolumeChange, onToggleMute],
+		[maxVolume, volume, onVolumeChange, onToggleMute],
 	);
 	useEffect(() => {
 		return () => {
@@ -264,7 +266,7 @@ export function MediaVerticalVolumeControl({
 						defaultValue={sliderValue}
 						factoryDefaultValue={100}
 						minValue={0}
-						maxValue={100}
+						maxValue={maxVolume * 100}
 						step={1}
 						value={sliderValue}
 						orientation="vertical"