diff --git a/Tone/instrument/Sampler.test.ts b/Tone/instrument/Sampler.test.ts
index 7c170bf6..2e4d39a0 100644
--- a/Tone/instrument/Sampler.test.ts
+++ b/Tone/instrument/Sampler.test.ts
@@ -6,7 +6,6 @@ import { InstrumentTest } from "test/helper/InstrumentTests";
 import { atTime, Offline } from "test/helper/Offline";
 import { ToneAudioBuffer } from "Tone/core/context/ToneAudioBuffer";
 import { Sampler } from "Tone/instrument/Sampler";
-import { ToneAudioBuffers } from "Tone/core/context/ToneAudioBuffers";
 
 describe("Sampler", () => {
 
@@ -145,33 +144,6 @@ describe("Sampler", () => {
 			}, 0.3);
 		});
 
-		it("can be constructed with a ToneAudioBuffers in an object", () => {
-			const sampler = new Sampler({
-				urls: new ToneAudioBuffers({
-					A4: A4_buffer
-				})
-			});
-			sampler.dispose();
-		});
-
-		it("can be constructed with unloaded a ToneAudioBuffers", (done) => {
-			const sampler = new Sampler({
-				urls: new ToneAudioBuffers({
-					A4: "./audio/sine.wav",
-				}, () => {
-					sampler.dispose();
-					done();
-				})
-			});
-		});
-
-		it("can be constructed with ToneAudioBuffers", () => {
-			const sampler = new Sampler(new ToneAudioBuffers({
-				A4: A4_buffer,
-			}));
-			sampler.dispose();
-		});
-
 	});
 
 	context("Makes sound", () => {
diff --git a/Tone/instrument/Sampler.ts b/Tone/instrument/Sampler.ts
index cb69d0be..8e0e0bc6 100644
--- a/Tone/instrument/Sampler.ts
+++ b/Tone/instrument/Sampler.ts
@@ -23,7 +23,7 @@ export interface SamplerOptions extends InstrumentOptions {
 	onerror: (error: Error) => void;
 	baseUrl: string;
 	curve: ToneBufferSourceCurve;
-	urls: SamplesMap | ToneAudioBuffers;
+	urls: SamplesMap;
 }
 
 /**
@@ -102,31 +102,27 @@ export class Sampler extends Instrument<SamplerOptions> {
 		super(optionsFromArguments(Sampler.getDefaults(), arguments, ["urls", "onload", "baseUrl"], "urls"));
 		const options = optionsFromArguments(Sampler.getDefaults(), arguments, ["urls", "onload", "baseUrl"], "urls");
 
-		if (options.urls instanceof ToneAudioBuffers) {
-			this._buffers = options.urls;
-		} else {
-			const urlMap = {};
-			Object.keys(options.urls).forEach((note) => {
-				const noteNumber = parseInt(note, 10);
-				assert(isNote(note)
-					|| (isNumber(noteNumber) && isFinite(noteNumber)), `url key is neither a note or midi pitch: ${note}`);
-				if (isNote(note)) {
-					// convert the note name to MIDI
-					const mid = new FrequencyClass(this.context, note).toMidi();
-					urlMap[mid] = options.urls[note];
-				} else if (isNumber(noteNumber) && isFinite(noteNumber)) {
-					// otherwise if it's numbers assume it's midi
-					urlMap[noteNumber] = options.urls[noteNumber];
-				}
-			});
+		const urlMap = {};
+		Object.keys(options.urls).forEach((note) => {
+			const noteNumber = parseInt(note, 10);
+			assert(isNote(note)
+				|| (isNumber(noteNumber) && isFinite(noteNumber)), `url key is neither a note or midi pitch: ${note}`);
+			if (isNote(note)) {
+				// convert the note name to MIDI
+				const mid = new FrequencyClass(this.context, note).toMidi();
+				urlMap[mid] = options.urls[note];
+			} else if (isNumber(noteNumber) && isFinite(noteNumber)) {
+				// otherwise if it's numbers assume it's midi
+				urlMap[noteNumber] = options.urls[noteNumber];
+			}
+		});
 
-			this._buffers = new ToneAudioBuffers({
-				urls: urlMap,
-				onload: options.onload,
-				baseUrl: options.baseUrl,
-				onerror: options.onerror,
-			});
-		}
+		this._buffers = new ToneAudioBuffers({
+			urls: urlMap,
+			onload: options.onload,
+			baseUrl: options.baseUrl,
+			onerror: options.onerror,
+		});
 		this.attack = options.attack;
 		this.release = options.release;
 		this.curve = options.curve;