diff --git a/dlls/dsdmo/dsdmo.idl b/dlls/dsdmo/dsdmo.idl
index e5735b42f73..7f172084828 100644
--- a/dlls/dsdmo/dsdmo.idl
+++ b/dlls/dsdmo/dsdmo.idl
@@ -26,6 +26,14 @@
 ]
 coclass DirectSoundI3DL2ReverbDMO {}
 
+[
+    threading(both),
+    progid("Microsoft.DirectSoundParamEqDMO.1"),
+    vi_progid("Microsoft.DirectSoundParamEqDMO"),
+    uuid(120ced89-3bf4-4173-a132-3cb406cf3231)
+]
+coclass DirectSoundParamEqDMO {}
+
 [
     threading(both),
     progid("Microsoft.DirectSoundWavesReverbDMO.1"),
diff --git a/dlls/dsdmo/main.c b/dlls/dsdmo/main.c
index 5755c6f1444..482b8202db2 100644
--- a/dlls/dsdmo/main.c
+++ b/dlls/dsdmo/main.c
@@ -434,6 +434,48 @@ static void effect_init(struct effect *effect, IUnknown *outer, const struct eff
     effect->ops = ops;
 }
 
+struct eq
+{
+    struct effect effect;
+};
+
+static struct eq *impl_eq_from_effect(struct effect *iface)
+{
+    return CONTAINING_RECORD(iface, struct eq, effect);
+}
+
+static void *eq_query_interface(struct effect *iface, REFIID iid)
+{
+    return NULL;
+}
+
+static void eq_destroy(struct effect *iface)
+{
+    struct eq *effect = impl_eq_from_effect(iface);
+
+    free(effect);
+}
+
+static const struct effect_ops eq_ops =
+{
+    .destroy = eq_destroy,
+    .query_interface = eq_query_interface,
+};
+
+static HRESULT eq_create(IUnknown *outer, IUnknown **out)
+{
+    struct eq *object;
+
+    if (!(object = calloc(1, sizeof(*object))))
+        return E_OUTOFMEMORY;
+
+    effect_init(&object->effect, outer, &eq_ops);
+
+    TRACE("Created equalizer effect %p.\n", object);
+    *out = &object->effect.IUnknown_inner;
+    return S_OK;
+}
+
 struct reverb
 {
     struct effect effect;
@@ -787,6 +829,7 @@ static struct
 class_factories[] =
 {
     {&GUID_DSFX_STANDARD_I3DL2REVERB,   {{&class_factory_vtbl}, reverb_create}},
+    {&GUID_DSFX_STANDARD_PARAMEQ,       {{&class_factory_vtbl}, eq_create}},
     {&GUID_DSFX_WAVES_REVERB,           {{&class_factory_vtbl}, waves_reverb_create}},
 };
 
diff --git a/dlls/dsound/tests/dsound8.c b/dlls/dsound/tests/dsound8.c
index 702cd4b2ba3..05dfabbd253 100644
--- a/dlls/dsound/tests/dsound8.c
+++ b/dlls/dsound/tests/dsound8.c
@@ -1617,8 +1617,8 @@ static void test_effects(void)
 
     results[0] = 0xdeadbeef;
     hr = IDirectSoundBuffer8_SetFX(buffer8, 1, effects, results);
-    todo_wine ok(hr == DS_OK, "Got hr %#x.\n", hr);
-    todo_wine ok(results[0] == DSFXR_LOCSOFTWARE, "Got result %#x.\n", results[0]);
+    ok(hr == DS_OK, "Got hr %#x.\n", hr);
+    ok(results[0] == DSFXR_LOCSOFTWARE, "Got result %#x.\n", results[0]);
 
     hr = IDirectSoundBuffer8_Lock(buffer8, 0, 0, &ptr1, &size1, &ptr2, &size2, DSBLOCK_ENTIREBUFFER);
     ok(hr == DS_OK, "Got hr %#x.\n", hr);
@@ -1648,38 +1648,33 @@ static void test_effects(void)
     effects[0].guidDSFXClass = GUID_DSFX_STANDARD_PARAMEQ;
     results[0] = 0xdeadbeef;
     hr = IDirectSoundBuffer8_SetFX(buffer8, 1, effects, results);
-    todo_wine ok(hr == DS_OK, "Got hr %#x.\n", hr);
-    todo_wine ok(results[0] == DSFXR_LOCSOFTWARE, "Got result %#x.\n", results[0]);
+    ok(hr == DS_OK, "Got hr %#x.\n", hr);
+    ok(results[0] == DSFXR_LOCSOFTWARE, "Got result %#x.\n", results[0]);
 
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8, &GUID_All_Objects, 0, &IID_IMediaObject, NULL);
-    todo_wine ok(hr == DSERR_INVALIDPARAM, "Got hr %#x.\n", hr);
+    ok(hr == DSERR_INVALIDPARAM, "Got hr %#x.\n", hr);
 
     dmo = (IMediaObject *)0xdeadbeef;
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8, &GUID_All_Objects, 0, &GUID_NULL, (void **)&dmo);
-    todo_wine ok(hr == E_NOINTERFACE, "Got hr %#x.\n", hr);
-    todo_wine ok(!dmo, "Got object %p.\n", dmo);
+    ok(hr == E_NOINTERFACE, "Got hr %#x.\n", hr);
+    ok(!dmo, "Got object %p.\n", dmo);
 
     dmo = (IMediaObject *)0xdeadbeef;
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8, &GUID_NULL, 0, &IID_IMediaObject, (void **)&dmo);
-    todo_wine ok(hr == DSERR_OBJECTNOTFOUND, "Got hr %#x.\n", hr);
+    ok(hr == DSERR_OBJECTNOTFOUND, "Got hr %#x.\n", hr);
     ok(dmo == (IMediaObject *)0xdeadbeef, "Got object %p.\n", dmo);
 
     dmo = NULL;
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8, &GUID_All_Objects, 0, &IID_IMediaObject, (void **)&dmo);
-    todo_wine ok(hr == DS_OK, "Got hr %#x.\n", hr);
-    if (hr == DS_OK)
-    {
-        ok(!!dmo, "Expected a non-NULL object.\n");
-        IMediaObject_Release(dmo);
-    }
+    ok(hr == DS_OK, "Got hr %#x.\n", hr);
+    ok(!!dmo, "Expected a non-NULL object.\n");
+    IMediaObject_Release(dmo);
 
     dmo = NULL;
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8, &GUID_DSFX_STANDARD_PARAMEQ, 0, &IID_IMediaObject, (void **)&dmo);
-    if (hr == DS_OK)
-    {
-        ok(!!dmo, "Expected a non-NULL object.\n");
-        IMediaObject_Release(dmo);
-    }
+    ok(hr == DS_OK, "Got hr %#x.\n", hr);
+    ok(!!dmo, "Expected a non-NULL object.\n");
+    IMediaObject_Release(dmo);
 
     dmo = (IMediaObject *)0xdeadbeef;
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8, &GUID_All_Objects, 1, &IID_IMediaObject, (void **)&dmo);
@@ -1691,7 +1686,7 @@ static void test_effects(void)
     results[0] = results[1] = 0xdeadbeef;
     hr = IDirectSoundBuffer8_SetFX(buffer8, 2, effects, results);
     ok(hr == REGDB_E_CLASSNOTREG, "Got hr %#x.\n", hr);
-    todo_wine ok(results[0] == DSFXR_PRESENT, "Got result %#x.\n", results[0]);
+    ok(results[0] == DSFXR_PRESENT, "Got result %#x.\n", results[0]);
     ok(results[1] == DSFXR_UNKNOWN, "Got result %#x.\n", results[1]);
 
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8, &GUID_All_Objects, 0, &IID_IMediaObject, (void **)&dmo);
@@ -1701,14 +1696,13 @@ static void test_effects(void)
     effects[1].guidDSFXClass = GUID_DSFX_STANDARD_I3DL2REVERB;
     results[0] = results[1] = 0xdeadbeef;
     hr = IDirectSoundBuffer8_SetFX(buffer8, 2, effects, results);
-    todo_wine ok(hr == DS_OK, "Got hr %#x.\n", hr);
-    todo_wine ok(results[0] == DSFXR_LOCSOFTWARE, "Got result %#x.\n", results[0]);
-    todo_wine ok(results[1] == DSFXR_LOCSOFTWARE, "Got result %#x.\n", results[1]);
+    ok(hr == DS_OK, "Got hr %#x.\n", hr);
+    ok(results[0] == DSFXR_LOCSOFTWARE, "Got result %#x.\n", results[0]);
+    ok(results[1] == DSFXR_LOCSOFTWARE, "Got result %#x.\n", results[1]);
 
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8, &GUID_DSFX_STANDARD_PARAMEQ, 0, &IID_IMediaObject, (void **)&dmo);
-    todo_wine ok(hr == DS_OK, "Got hr %#x.\n", hr);
-    if (hr == DS_OK)
-        echo = dmo;
+    ok(hr == DS_OK, "Got hr %#x.\n", hr);
+    echo = dmo;
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8,
             &GUID_DSFX_STANDARD_I3DL2REVERB, 0, &IID_IMediaObject, (void **)&dmo);
     todo_wine ok(hr == DS_OK, "Got hr %#x.\n", hr);
@@ -1716,20 +1710,14 @@ static void test_effects(void)
         reverb = dmo;
 
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8, &GUID_All_Objects, 0, &IID_IMediaObject, (void **)&dmo);
-    todo_wine ok(hr == DS_OK, "Got hr %#x.\n", hr);
-    if (hr == DS_OK)
-    {
-        ok(dmo == echo, "Expected %p, got %p.\n", echo, dmo);
-        IMediaObject_Release(dmo);
-    }
+    ok(hr == DS_OK, "Got hr %#x.\n", hr);
+    ok(dmo == echo, "Expected %p, got %p.\n", echo, dmo);
+    IMediaObject_Release(dmo);
 
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8, &GUID_All_Objects, 1, &IID_IMediaObject, (void **)&dmo);
-    todo_wine ok(hr == DS_OK, "Got hr %#x.\n", hr);
-    if (hr == DS_OK)
-    {
-        ok(dmo == reverb, "Expected %p, got %p.\n", reverb, dmo);
-        IMediaObject_Release(dmo);
-    }
+    ok(hr == DS_OK, "Got hr %#x.\n", hr);
+    todo_wine ok(dmo == reverb, "Expected %p, got %p.\n", reverb, dmo);
+    IMediaObject_Release(dmo);
 
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8,
             &GUID_DSFX_STANDARD_I3DL2REVERB, 1, &IID_IMediaObject, (void **)&dmo);
@@ -1748,13 +1736,12 @@ static void test_effects(void)
 
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8, &GUID_All_Objects, 0,
             &IID_IDirectSoundFXI3DL2Reverb, (void **)&unk);
-    todo_wine ok(hr == E_NOINTERFACE, "Got hr %#x.\n", hr);
+    ok(hr == E_NOINTERFACE, "Got hr %#x.\n", hr);
 
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8, &GUID_All_Objects, 1,
             &IID_IDirectSoundFXI3DL2Reverb, (void **)&unk);
-    todo_wine ok(hr == DS_OK, "Got hr %#x.\n", hr);
-    if (hr == DS_OK)
-        IUnknown_Release(unk);
+    ok(hr == DS_OK, "Got hr %#x.\n", hr);
+    IUnknown_Release(unk);
 
     hr = IDirectSoundBuffer8_GetObjectInPath(buffer8,
             &GUID_DSFX_STANDARD_I3DL2REVERB, 0, &IID_IDirectSoundFXI3DL2Reverb, (void **)&unk);