diff --git a/experimental/packages/opentelemetry-instrumentation-fetch/src/fetch.ts b/experimental/packages/opentelemetry-instrumentation-fetch/src/fetch.ts
index a564b76f5a4..1f762f429b9 100644
--- a/experimental/packages/opentelemetry-instrumentation-fetch/src/fetch.ts
+++ b/experimental/packages/opentelemetry-instrumentation-fetch/src/fetch.ts
@@ -76,11 +76,11 @@ export class FetchInstrumentation extends InstrumentationBase<
   private _usedResources = new WeakSet<PerformanceResourceTiming>();
   private _tasksCount = 0;
 
-  constructor(config: FetchInstrumentationConfig = {}) {
+  constructor(config?: FetchInstrumentationConfig) {
     super(
       '@opentelemetry/instrumentation-fetch',
       VERSION,
-      Object.assign({}, config)
+      config
     );
   }
 
diff --git a/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc-js/clientUtils.ts b/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc-js/clientUtils.ts
index b2810cd1047..5671d3a815e 100644
--- a/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc-js/clientUtils.ts
+++ b/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc-js/clientUtils.ts
@@ -48,7 +48,7 @@ export function getMethodsToWrap(
 
   // For a method defined in .proto as "UnaryMethod"
   Object.entries(methods).forEach(([name, { originalName }]) => {
-    if (!_methodIsIgnored(name, this._config.ignoreGrpcMethods)) {
+    if (!_methodIsIgnored(name, this.getConfig().ignoreGrpcMethods)) {
       methodList.push(name); // adds camel case method name: "unaryMethod"
       if (
         originalName &&
diff --git a/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc-js/index.ts b/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc-js/index.ts
index ba4f46e3516..ce9777c68bd 100644
--- a/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc-js/index.ts
+++ b/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc-js/index.ts
@@ -19,10 +19,7 @@ import {
   InstrumentationNodeModuleDefinition,
   isWrapped,
 } from '@opentelemetry/instrumentation';
-import {
-  InstrumentationBase,
-  InstrumentationConfig,
-} from '@opentelemetry/instrumentation';
+import { InstrumentationBase } from '@opentelemetry/instrumentation';
 import { GrpcInstrumentationConfig } from '../types';
 import {
   ServerCallWithMeta,
@@ -56,17 +53,11 @@ import { AttributeNames } from '../enums/AttributeNames';
 
 export class GrpcJsInstrumentation extends InstrumentationBase {
   constructor(
-    protected override _config: GrpcInstrumentationConfig & InstrumentationConfig = {},
     name: string,
-    version: string
+    version: string,
+    config?: GrpcInstrumentationConfig,
   ) {
-    super(name, version, _config);
-  }
-
-  public override setConfig(
-    config: GrpcInstrumentationConfig & InstrumentationConfig = {}
-  ) {
-    this._config = Object.assign({}, config);
+    super(name, version, config);
   }
 
   init() {
@@ -125,6 +116,10 @@ export class GrpcJsInstrumentation extends InstrumentationBase {
     ];
   }
 
+  override getConfig(): GrpcInstrumentationConfig {
+    return super.getConfig();
+  }
+
   /**
    * Patch for grpc.Server.prototype.register(...) function. Provides auto-instrumentation for
    * client_stream, server_stream, bidi, unary server handler calls.
@@ -134,7 +129,7 @@ export class GrpcJsInstrumentation extends InstrumentationBase {
   ) => ServerRegisterFunction {
     const instrumentation = this;
     return (originalRegister: ServerRegisterFunction) => {
-      const config = this._config;
+      const config = this.getConfig();
       instrumentation._diag.debug('patched gRPC server');
       return function register<RequestType, ResponseType>(
         this: grpcJs.Server,
diff --git a/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc/index.ts b/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc/index.ts
index 18b649b95ca..bf488028f04 100644
--- a/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc/index.ts
+++ b/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc/index.ts
@@ -19,7 +19,6 @@ import {
   InstrumentationNodeModuleDefinition,
   InstrumentationNodeModuleFile,
   InstrumentationBase,
-  InstrumentationConfig,
   isWrapped,
 } from '@opentelemetry/instrumentation';
 import {
@@ -55,17 +54,11 @@ export class GrpcNativeInstrumentation extends InstrumentationBase<
   typeof grpcTypes
 > {
   constructor(
-    protected override _config: GrpcInstrumentationConfig & InstrumentationConfig = {},
     name: string,
-    version: string
+    version: string,
+    config?: GrpcInstrumentationConfig
   ) {
-    super(name, version, _config);
-  }
-
-  public override setConfig(
-    config: GrpcInstrumentationConfig & InstrumentationConfig = {}
-  ) {
-    this._config = Object.assign({}, config);
+    super(name, version, config);
   }
 
   init() {
@@ -107,6 +100,10 @@ export class GrpcNativeInstrumentation extends InstrumentationBase<
     ];
   }
 
+  override getConfig(): GrpcInstrumentationConfig {
+    return super.getConfig();
+  }
+
   private _getInternalPatchs() {
     const onPatch = (
       moduleExports: GrpcInternalClientTypes,
@@ -268,7 +265,7 @@ export class GrpcNativeInstrumentation extends InstrumentationBase<
 
     // For a method defined in .proto as "UnaryMethod"
     Object.entries(methods).forEach(([name, { originalName }]) => {
-      if (!_methodIsIgnored(name, this._config.ignoreGrpcMethods)) {
+      if (!_methodIsIgnored(name, this.getConfig().ignoreGrpcMethods)) {
         methodList.push(name); // adds camel case method name: "unaryMethod"
         if (
           originalName &&
diff --git a/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc/serverUtils.ts b/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc/serverUtils.ts
index 5d88eeabcc1..32f26ebd387 100644
--- a/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc/serverUtils.ts
+++ b/experimental/packages/opentelemetry-instrumentation-grpc/src/grpc/serverUtils.ts
@@ -131,6 +131,6 @@ export const shouldNotTraceServerCall = function (
   const parsedName = name.split('/');
   return _methodIsIgnored(
     parsedName[parsedName.length - 1] || name,
-    this._config.ignoreGrpcMethods
+    this.getConfig().ignoreGrpcMethods
   );
 };
diff --git a/experimental/packages/opentelemetry-instrumentation-grpc/src/instrumentation.ts b/experimental/packages/opentelemetry-instrumentation-grpc/src/instrumentation.ts
index 0245f367d2c..5ac237038a1 100644
--- a/experimental/packages/opentelemetry-instrumentation-grpc/src/instrumentation.ts
+++ b/experimental/packages/opentelemetry-instrumentation-grpc/src/instrumentation.ts
@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-import { InstrumentationConfig } from '@opentelemetry/instrumentation';
 import { GrpcInstrumentationConfig } from './types';
 import { VERSION } from './version';
 import { GrpcNativeInstrumentation } from './grpc';
@@ -34,26 +33,23 @@ export class GrpcInstrumentation {
   public readonly instrumentationVersion: string = VERSION;
 
   constructor(
-    protected _config: GrpcInstrumentationConfig & InstrumentationConfig = {}
+    config?: GrpcInstrumentationConfig
   ) {
     this._grpcJsInstrumentation = new GrpcJsInstrumentation(
-      _config,
       this.instrumentationName,
-      this.instrumentationVersion
+      this.instrumentationVersion,
+      config
     );
     this._grpcNativeInstrumentation = new GrpcNativeInstrumentation(
-      _config,
       this.instrumentationName,
-      this.instrumentationVersion
+      this.instrumentationVersion,
+      config
     );
   }
 
-  public setConfig(
-    config: GrpcInstrumentationConfig & InstrumentationConfig = {}
-  ) {
-    this._config = Object.assign({}, config);
-    this._grpcJsInstrumentation.setConfig(this._config);
-    this._grpcNativeInstrumentation.setConfig(this._config);
+  public setConfig(config?: GrpcInstrumentationConfig) {
+    this._grpcJsInstrumentation.setConfig(config);
+    this._grpcNativeInstrumentation.setConfig(config);
   }
 
   /**
@@ -61,8 +57,9 @@ export class GrpcInstrumentation {
    * Public reference to the protected BaseInstrumentation `_config` instance to be used by this
    * plugin's external helper functions
    */
-  public getConfig() {
-    return this._config;
+  public getConfig(): GrpcInstrumentationConfig {
+    // grpcNative and grpcJs have their own config copy which should be identical so just pick one
+    return this._grpcJsInstrumentation.getConfig();
   }
 
   init() {
diff --git a/experimental/packages/opentelemetry-instrumentation-http/src/http.ts b/experimental/packages/opentelemetry-instrumentation-http/src/http.ts
index 6c889b40664..e183d5e5e65 100644
--- a/experimental/packages/opentelemetry-instrumentation-http/src/http.ts
+++ b/experimental/packages/opentelemetry-instrumentation-http/src/http.ts
@@ -44,7 +44,6 @@ import * as utils from './utils';
 import { VERSION } from './version';
 import {
   InstrumentationBase,
-  InstrumentationConfig,
   InstrumentationNodeModuleDefinition,
   isWrapped,
   safeExecuteInTheMiddle,
@@ -60,11 +59,11 @@ export class HttpInstrumentation extends InstrumentationBase<Http> {
   private readonly _version = process.versions.node;
   private _headerCapture;
 
-  constructor(config: HttpInstrumentationConfig & InstrumentationConfig = {}) {
+  constructor(config?: HttpInstrumentationConfig) {
     super(
       '@opentelemetry/instrumentation-http',
       VERSION,
-      Object.assign({}, config)
+      config
     );
 
     this._headerCapture = this._createHeaderCapture();
@@ -74,8 +73,8 @@ export class HttpInstrumentation extends InstrumentationBase<Http> {
     return this._config;
   }
 
-  override setConfig(config: HttpInstrumentationConfig & InstrumentationConfig = {}): void {
-    this._config = Object.assign({}, config);
+  override setConfig(config?: HttpInstrumentationConfig): void {
+    super.setConfig(config);
     this._headerCapture = this._createHeaderCapture();
   }
 
diff --git a/experimental/packages/opentelemetry-instrumentation-xml-http-request/src/xhr.ts b/experimental/packages/opentelemetry-instrumentation-xml-http-request/src/xhr.ts
index d2d126be8e5..1d0c9faac10 100644
--- a/experimental/packages/opentelemetry-instrumentation-xml-http-request/src/xhr.ts
+++ b/experimental/packages/opentelemetry-instrumentation-xml-http-request/src/xhr.ts
@@ -89,13 +89,11 @@ export class XMLHttpRequestInstrumentation extends InstrumentationBase<XMLHttpRe
   private _xhrMem = new WeakMap<XMLHttpRequest, XhrMem>();
   private _usedResources = new WeakSet<PerformanceResourceTiming>();
 
-  constructor(
-    config: XMLHttpRequestInstrumentationConfig & InstrumentationConfig = {}
-  ) {
+  constructor(config?: XMLHttpRequestInstrumentationConfig) {
     super(
       '@opentelemetry/instrumentation-xml-http-request',
       VERSION,
-      Object.assign({}, config)
+      config
     );
   }