diff --git a/src/core/libraries/ajm/ajm.cpp b/src/core/libraries/ajm/ajm.cpp
index 80681cbaf..2396669b6 100644
--- a/src/core/libraries/ajm/ajm.cpp
+++ b/src/core/libraries/ajm/ajm.cpp
@@ -13,8 +13,31 @@
 
 namespace Libraries::Ajm {
 
+constexpr int ORBIS_AJM_CHANNELMASK_MONO = 0x0004;
+constexpr int ORBIS_AJM_CHANNELMASK_STEREO = 0x0003;
+constexpr int ORBIS_AJM_CHANNELMASK_QUAD = 0x0033;
+constexpr int ORBIS_AJM_CHANNELMASK_5POINT1 = 0x060F;
+constexpr int ORBIS_AJM_CHANNELMASK_7POINT1 = 0x063F;
+
 static std::unique_ptr<AjmContext> context{};
 
+u32 GetChannelMask(u32 num_channels) {
+    switch (num_channels) {
+    case 1:
+        return ORBIS_AJM_CHANNELMASK_MONO;
+    case 2:
+        return ORBIS_AJM_CHANNELMASK_STEREO;
+    case 4:
+        return ORBIS_AJM_CHANNELMASK_QUAD;
+    case 6:
+        return ORBIS_AJM_CHANNELMASK_5POINT1;
+    case 8:
+        return ORBIS_AJM_CHANNELMASK_7POINT1;
+    default:
+        UNREACHABLE();
+    }
+}
+
 int PS4_SYSV_ABI sceAjmBatchCancel(const u32 context_id, const u32 batch_id) {
     LOG_INFO(Lib_Ajm, "called context_id = {} batch_id = {}", context_id, batch_id);
     return context->BatchCancel(batch_id);
diff --git a/src/core/libraries/ajm/ajm.h b/src/core/libraries/ajm/ajm.h
index 4935b09b3..1ac7c7629 100644
--- a/src/core/libraries/ajm/ajm.h
+++ b/src/core/libraries/ajm/ajm.h
@@ -141,6 +141,8 @@ static_assert(sizeof(AjmInstanceFlags) == 8);
 
 struct AjmDecMp3ParseFrame;
 
+u32 GetChannelMask(u32 num_channels);
+
 int PS4_SYSV_ABI sceAjmBatchCancel(const u32 context_id, const u32 batch_id);
 int PS4_SYSV_ABI sceAjmBatchErrorDump();
 void* PS4_SYSV_ABI sceAjmBatchJobControlBufferRa(void* p_buffer, u32 instance_id, u64 flags,
diff --git a/src/core/libraries/ajm/ajm_at9.cpp b/src/core/libraries/ajm/ajm_at9.cpp
index b945e3cdd..7fff0ff0c 100644
--- a/src/core/libraries/ajm/ajm_at9.cpp
+++ b/src/core/libraries/ajm/ajm_at9.cpp
@@ -129,4 +129,15 @@ std::tuple<u32, u32> AjmAt9Decoder::ProcessData(std::span<u8>& in_buf, SparseOut
     return {1, samples_written / m_codec_info.channels};
 }
 
+AjmSidebandFormat AjmAt9Decoder::GetFormat() {
+    return AjmSidebandFormat{
+        .num_channels = u32(m_codec_info.channels),
+        .channel_mask = GetChannelMask(u32(m_codec_info.channels)),
+        .sampl_freq = u32(m_codec_info.samplingRate),
+        .sample_encoding = m_format,
+        .bitrate = u32(m_codec_info.samplingRate * GetPointCodeSize() * 8),
+        .reserved = 0,
+    };
+}
+
 } // namespace Libraries::Ajm
diff --git a/src/core/libraries/ajm/ajm_at9.h b/src/core/libraries/ajm/ajm_at9.h
index 0864bba14..e5f65db93 100644
--- a/src/core/libraries/ajm/ajm_at9.h
+++ b/src/core/libraries/ajm/ajm_at9.h
@@ -34,6 +34,7 @@ struct AjmAt9Decoder final : AjmCodec {
     void Reset() override;
     void Initialize(const void* buffer, u32 buffer_size) override;
     void GetInfo(void* out_info) override;
+    AjmSidebandFormat GetFormat() override;
     std::tuple<u32, u32> ProcessData(std::span<u8>& input, SparseOutputBuffer& output,
                                      AjmSidebandGaplessDecode& gapless,
                                      std::optional<u32> max_samples) override;
diff --git a/src/core/libraries/ajm/ajm_instance.cpp b/src/core/libraries/ajm/ajm_instance.cpp
index dc4e631d9..85a6f54a1 100644
--- a/src/core/libraries/ajm/ajm_instance.cpp
+++ b/src/core/libraries/ajm/ajm_instance.cpp
@@ -102,6 +102,9 @@ void AjmInstance::ExecuteJob(AjmJob& job) {
         m_gapless.skipped_samples = 0;
         m_codec->Reset();
     }
+    if (job.output.p_format != nullptr) {
+        *job.output.p_format = m_codec->GetFormat();
+    }
     if (job.output.p_gapless_decode != nullptr) {
         *job.output.p_gapless_decode = m_gapless;
     }
diff --git a/src/core/libraries/ajm/ajm_instance.h b/src/core/libraries/ajm/ajm_instance.h
index 96a30ef47..d1d398ae8 100644
--- a/src/core/libraries/ajm/ajm_instance.h
+++ b/src/core/libraries/ajm/ajm_instance.h
@@ -60,6 +60,7 @@ public:
     virtual void Initialize(const void* buffer, u32 buffer_size) = 0;
     virtual void Reset() = 0;
     virtual void GetInfo(void* out_info) = 0;
+    virtual AjmSidebandFormat GetFormat() = 0;
     virtual std::tuple<u32, u32> ProcessData(std::span<u8>& input, SparseOutputBuffer& output,
                                              AjmSidebandGaplessDecode& gapless,
                                              std::optional<u32> max_samples_per_channel) = 0;
diff --git a/src/core/libraries/ajm/ajm_mp3.cpp b/src/core/libraries/ajm/ajm_mp3.cpp
index d39b5bb88..eb65fe2a8 100644
--- a/src/core/libraries/ajm/ajm_mp3.cpp
+++ b/src/core/libraries/ajm/ajm_mp3.cpp
@@ -192,4 +192,9 @@ int AjmMp3Decoder::ParseMp3Header(const u8* buf, u32 stream_size, int parse_ofl,
     return ORBIS_OK;
 }
 
+AjmSidebandFormat AjmMp3Decoder::GetFormat() {
+    LOG_ERROR(Lib_Ajm, "Unimplemented");
+    return AjmSidebandFormat{};
+};
+
 } // namespace Libraries::Ajm
diff --git a/src/core/libraries/ajm/ajm_mp3.h b/src/core/libraries/ajm/ajm_mp3.h
index e6f4f7af6..0ae956d61 100644
--- a/src/core/libraries/ajm/ajm_mp3.h
+++ b/src/core/libraries/ajm/ajm_mp3.h
@@ -56,6 +56,7 @@ public:
     void Reset() override;
     void Initialize(const void* buffer, u32 buffer_size) override {}
     void GetInfo(void* out_info) override;
+    AjmSidebandFormat GetFormat() override;
     std::tuple<u32, u32> ProcessData(std::span<u8>& input, SparseOutputBuffer& output,
                                      AjmSidebandGaplessDecode& gapless,
                                      std::optional<u32> max_samples_per_channel) override;