diff --git a/headphones/admin.py b/headphones/admin.py
index e892bd0..77711ce 100644
--- a/headphones/admin.py
+++ b/headphones/admin.py
@@ -209,7 +209,7 @@ class HeadphonesAdmin(admin.ModelAdmin):
             'fields': [
                 ('impedance', 'sensitivity'),
                 'frequency_range',
-                'frequency_response_chart',
+                ('frequency_response_chart', 'frequency_response_chart_author', 'frequency_response_chart_link'),
                 ('microphone', 'noise_cancellation'),
                 'ip_rating',
             ]
@@ -378,8 +378,8 @@ class TagsAdmin(admin.ModelAdmin):
 
 @admin.register(DriverType)
 class DriverTypeAdmin(admin.ModelAdmin):
-    list_display = ('name', 'slug')
-    search_fields = ('name',)
+    list_display = ('name', 'slug', 'encoding')
+    search_fields = ('name', 'encoding')
     prepopulated_fields = {'slug': ('name',)}
 
 
diff --git a/headphones/models.py b/headphones/models.py
index d567eca..a1a38f7 100644
--- a/headphones/models.py
+++ b/headphones/models.py
@@ -23,6 +23,9 @@ def upload_to_case_image(instance, filename):
     ext = filename.split('.')[-1]
     return f"headphones/{instance.headphones.id}/case_images/{instance.slug}.{ext}"
 
+def upload_to_frequency_response(instance, filename):
+    return f"headphones/{instance.headphones.id}/frequency_response/{filename}"
+
 # ======================
 # Базовые справочники
 # ======================
@@ -203,6 +206,7 @@ class DriverModel(models.Model):
 
 class DriverType(models.Model):
     name = models.CharField(max_length=50, verbose_name="Тип драйвера")
+    encoding = models.CharField(blank=True, max_length=10, verbose_name="Буквенное обозначение>")
     slug = models.SlugField(unique=True, verbose_name="URL-идентификатор")
 
     class Meta:
@@ -612,6 +616,14 @@ def delete_image_file(sender, instance, **kwargs):
         except Exception as e:
             print(f"Ошибка при удалении файла (сигнал): {e}")
 
+
+class HeadphonesMicrophoneType(models.Model):
+    type = models.CharField(max_length=50, verbose_name="Тип микрофона")
+    description = models.CharField(blank=True, verbose_name="Описание")
+
+    class Meta:
+        verbose_name = "Тип микрофона"
+
 # ======================
 # Основная модель наушников
 # ======================
@@ -684,12 +696,26 @@ class Headphones(models.Model):
     )
 
     # Технические характеристики
-    frequency_response_chart = models.JSONField(
-        verbose_name="АЧХ (JSON)",
+    frequency_response_chart = models.FileField(
+        verbose_name="АЧХ (CSV)",
+        upload_to = upload_to_frequency_response,
         null=True,
         blank=True,
         help_text="Данные в формате [{'frequency': 20, 'amplitude': -2.5}, ...]"
     )
+
+    frequency_response_chart_author = models.CharField(
+        verbose_name="Автор АЧХ",
+        null=True,
+        blank=True,
+    )
+
+    frequency_response_chart_link = models.CharField(
+        verbose_name="Ссылка на АЧХ",
+        null=True,
+        blank=True,
+    )
+
     impedance = models.DecimalField(
         verbose_name="Импеданс (Ом)",
         max_digits=5,