diff --git a/.gitignore b/.gitignore
index 2d0f243..2848c67 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,5 @@ avatar3d/models_archivio/
 # Varie
 *.log
 .DS_Store
+.venv-chatterbox/
+tts_chatterbox/test_*.py
diff --git a/avatar/assistant.py b/avatar/assistant.py
index ce08624..c14cbf6 100644
--- a/avatar/assistant.py
+++ b/avatar/assistant.py
@@ -233,8 +233,9 @@ class Assistant:
                     self.settings.set("kokoro_voice", voice)
                 self.settings.save()
         else:
-            label = "Sistema" if self.settings.get("tts_engine") == "system" else \
-                {"if_sara": "Sara", "im_nicola": "Nicola"}.get(self.settings.get("kokoro_voice"), "Sara")
+            eng = self.settings.get("tts_engine")
+            label = "Sistema" if eng == "system" else ("Sara" if eng == "chatterbox" else
+                {"if_sara": "Sara", "im_nicola": "Nicola"}.get(self.settings.get("kokoro_voice"), "Sara"))
             try:
                 if cm.get_voice() != label:
                     cm.save_voice(label)
diff --git a/avatar/settings.py b/avatar/settings.py
index d7891c4..d10d9f4 100644
--- a/avatar/settings.py
+++ b/avatar/settings.py
@@ -24,6 +24,9 @@ DEFAULTS: dict[str, Any] = {
     "claudecode_path": "",
     "tts_engine": "kokoro",             # kokoro | system
     "kokoro_voice": "if_sara",
+    "chatterbox_exaggeration": 0.6,    # 0.3 sobria … 0.9 molto enfatica
+    "chatterbox_cfg": 0.3,             # più basso = più veloce e meno aderente al testo
+    "chatterbox_ref": "",              # wav di riferimento per clonare una voce (facoltativo)
     "system_voice": "",                 # "" = automatica
     "stt_model": "mlx-community/whisper-small-mlx",
     "vad_threshold": 0.08,
diff --git a/avatar/settings_dialog.py b/avatar/settings_dialog.py
index 637acab..9081241 100644
--- a/avatar/settings_dialog.py
+++ b/avatar/settings_dialog.py
@@ -99,11 +99,16 @@ class SettingsDialog(QDialog):
         self.stack.setCurrentIndex(self.provider.currentIndex())
 
         form2 = QFormLayout()
-        self.tts_engine = _combo([("kokoro", "Kokoro, voce neurale in locale"), ("system", "Voce di sistema (macOS)")], s.get("tts_engine"))
+        self.tts_engine = _combo([("kokoro", "Kokoro, voce neurale in locale"), ("chatterbox", "Chatterbox, espressiva in locale (lenta)"), ("system", "Voce di sistema (macOS)")], s.get("tts_engine"))
         form2.addRow("Motore voce", self.tts_engine)
         self.kokoro_voice = _combo(list(KOKORO_VOICES.items()), s.get("kokoro_voice")); form2.addRow("Voce Kokoro", self.kokoro_voice)
         self.system_voice = _combo([("", "Automatica (Alice)")] + [(v, v) for v in SystemVoice.list_voices()], s.get("system_voice"))
         form2.addRow("Voce di sistema", self.system_voice)
+        row = QHBoxLayout()
+        self.cb_exag = QDoubleSpinBox(); self.cb_exag.setRange(0.2, 1.0); self.cb_exag.setSingleStep(0.1); self.cb_exag.setValue(float(s.get("chatterbox_exaggeration", 0.6))); row.addWidget(QLabel("enfasi")); row.addWidget(self.cb_exag)
+        self.cb_cfg = QDoubleSpinBox(); self.cb_cfg.setRange(0.0, 1.0); self.cb_cfg.setSingleStep(0.1); self.cb_cfg.setValue(float(s.get("chatterbox_cfg", 0.3))); row.addWidget(QLabel("aderenza (0 = più veloce)")); row.addWidget(self.cb_cfg)
+        self.cb_ref = QLineEdit(s.get("chatterbox_ref") or ""); self.cb_ref.setPlaceholderText("wav di riferimento per clonare una voce (facoltativo)"); row.addWidget(self.cb_ref, 1)
+        form2.addRow("Chatterbox", row)
         self.stt_model = _combo(STT_MODELS, s.get("stt_model")); form2.addRow("Riconoscimento vocale", self.stt_model)
         from .avatar3d import list_models
         models = list_models()
@@ -341,6 +346,7 @@ class SettingsDialog(QDialog):
             "claudecode_config_dir": self.cc_config.currentText().strip(), "claudecode_path": self.cc_path.text().strip(),
             "tts_engine": self.tts_engine.currentData(), "kokoro_voice": self.kokoro_voice.currentData(),
             "system_voice": self.system_voice.currentData(), "stt_model": self.stt_model.currentData(),
+            "chatterbox_exaggeration": float(self.cb_exag.value()), "chatterbox_cfg": float(self.cb_cfg.value()), "chatterbox_ref": self.cb_ref.text().strip(),
             "vad_threshold": float(self.vad.value()),
             "avatar_model": self.avatar_model.currentData() or "",
             "telegram_api_id": self.tg_id.text().strip(),
diff --git a/avatar/tts.py b/avatar/tts.py
index 9c5bc0c..3994d3b 100644
--- a/avatar/tts.py
+++ b/avatar/tts.py
@@ -132,7 +132,76 @@ class SystemVoice:
         return data
 
 
+class ChatterboxVoice:
+    """Chatterbox (Resemble AI) in un ambiente separato, avviato come servizio locale."""
+
+    PORT = 8792
+    _proc = None
+
+    def __init__(self, exaggeration: float = 0.6, cfg: float = 0.3, ref_audio: str = "", on_status=None) -> None:
+        self.exaggeration, self.cfg, self.ref_audio = exaggeration, cfg, ref_audio
+        self.voice = f"chatterbox:{exaggeration}:{cfg}:{ref_audio}"
+        self._on_status = on_status or (lambda m: None)
+
+    @classmethod
+    def _start(cls) -> None:
+        import subprocess
+        from pathlib import Path as _P
+        if cls._proc is not None and cls._proc.poll() is None:
+            return
+        base = _P(__file__).resolve().parent.parent
+        python = base / ".venv-chatterbox" / "bin" / "python"
+        if not python.exists():
+            raise RuntimeError("Chatterbox non installato: esegui `uv venv .venv-chatterbox --python 3.12 && uv pip install --python .venv-chatterbox/bin/python chatterbox-tts 'setuptools<81'`.")
+        log = open(base / "data" / "chatterbox.log", "a")
+        cls._proc = subprocess.Popen([str(python), str(base / "tts_chatterbox" / "server.py"), "--port", str(cls.PORT)],
+                                     stdout=log, stderr=subprocess.STDOUT, cwd=str(base))
+
+    def load(self) -> None:
+        import requests
+        import time as _t
+        self._start()
+        self._on_status("Avvio Chatterbox (la prima volta scarica il modello, circa 2 GB)…")
+        try:
+            for _ in range(600):   # fino a 10 minuti (download iniziale)
+                try:
+                    st = requests.get(f"http://127.0.0.1:{self.PORT}/", timeout=3).json()
+                    if st.get("ready"):
+                        return
+                    if st.get("error"):
+                        raise RuntimeError(st["error"])
+                except requests.RequestException:
+                    pass
+                if self._proc is not None and self._proc.poll() is not None:
+                    raise RuntimeError("Il servizio Chatterbox si è chiuso: vedi data/chatterbox.log.")
+                _t.sleep(1)
+            raise RuntimeError("Chatterbox non è pronto.")
+        finally:
+            self._on_status(None)
+
+    def synthesize(self, text: str) -> np.ndarray:
+        import requests
+        r = requests.post(f"http://127.0.0.1:{self.PORT}/tts", json={"text": text, "language": "it", "exaggeration": self.exaggeration,
+                                                                     "cfg": self.cfg, "ref": self.ref_audio or None}, timeout=600)
+        if r.status_code != 200:
+            raise RuntimeError(r.json().get("error", r.text))
+        sr = int(r.headers.get("X-Sample-Rate", "24000"))
+        data = np.frombuffer(r.content, dtype=np.float32)
+        if sr != OUT_RATE:
+            data = np.interp(np.arange(0, data.size, sr / OUT_RATE), np.arange(data.size), data).astype(np.float32)
+        return data
+
+    @classmethod
+    def stop(cls) -> None:
+        if cls._proc is not None and cls._proc.poll() is None:
+            cls._proc.terminate()
+        cls._proc = None
+
+
 def make_voice(settings, on_status=None):
+    if settings.get("tts_engine") == "chatterbox":
+        return ChatterboxVoice(float(settings.get("chatterbox_exaggeration", 0.6)), float(settings.get("chatterbox_cfg", 0.3)),
+                               str(settings.get("chatterbox_ref", "") or ""), on_status=on_status)
     if settings.get("tts_engine") == "system":
         return SystemVoice(settings.get("system_voice", ""))
     return KokoroVoice(settings.get("kokoro_voice", "if_sara"), on_status=on_status)
diff --git a/samples/chatterbox-it-0.5.wav b/samples/chatterbox-it-0.5.wav
new file mode 100644
index 0000000..467496a
Binary files /dev/null and b/samples/chatterbox-it-0.5.wav differ
diff --git a/samples/chatterbox-it-0.8.wav b/samples/chatterbox-it-0.8.wav
new file mode 100644
index 0000000..268c96e
Binary files /dev/null and b/samples/chatterbox-it-0.8.wav differ
diff --git a/samples/chatterbox-it-cfg0.0.wav b/samples/chatterbox-it-cfg0.0.wav
new file mode 100644
index 0000000..f4e145d
Binary files /dev/null and b/samples/chatterbox-it-cfg0.0.wav differ
diff --git a/samples/chatterbox-it-cfg0.3.wav b/samples/chatterbox-it-cfg0.3.wav
new file mode 100644
index 0000000..28a4984
Binary files /dev/null and b/samples/chatterbox-it-cfg0.3.wav differ
diff --git a/tts_chatterbox/server.py b/tts_chatterbox/server.py
new file mode 100644
index 0000000..edfc68f
--- /dev/null
+++ b/tts_chatterbox/server.py
@@ -0,0 +1,76 @@
+"""Servizio Chatterbox (ambiente isolato .venv-chatterbox): sintesi vocale espressiva via HTTP locale."""
+from __future__ import annotations
+
+import io
+import json
+import sys
+import threading
+from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
+
+import torch
+
+PORT = int(sys.argv[sys.argv.index("--port") + 1]) if "--port" in sys.argv else 8792
+DEVICE = "mps" if torch.backends.mps.is_available() else "cpu"
+_load = torch.load
+
+
+def _patched(*a, **k):
+    k.setdefault("map_location", torch.device(DEVICE))
+    return _load(*a, **k)
+
+
+torch.load = _patched
+state = {"ready": False, "error": None}
+model = None
+lock = threading.Lock()
+
+
+def load():
+    global model
+    try:
+        from chatterbox.mtl_tts import ChatterboxMultilingualTTS
+        m = ChatterboxMultilingualTTS.from_pretrained(device=DEVICE)
+        m.generate("ciao", language_id="it")   # riscaldamento
+        model = m
+        state["ready"] = True
+    except Exception as err:
+        state["error"] = str(err)
+
+
+class H(BaseHTTPRequestHandler):
+    def log_message(self, *a):
+        pass
+
+    def _json(self, code, obj):
+        body = json.dumps(obj).encode()
+        self.send_response(code); self.send_header("Content-Type", "application/json"); self.send_header("Content-Length", str(len(body))); self.end_headers(); self.wfile.write(body)
+
+    def do_GET(self):
+        self._json(200, {"ready": state["ready"], "error": state["error"], "device": DEVICE, "sr": model.sr if model else None})
+
+    def do_POST(self):
+        if not state["ready"]:
+            return self._json(503, {"error": state["error"] or "modello in caricamento"})
+        n = int(self.headers.get("Content-Length", "0"))
+        req = json.loads(self.rfile.read(n) or b"{}")
+        text = str(req.get("text", "")).strip()
+        if not text:
+            return self._json(400, {"error": "testo vuoto"})
+        kw = {"language_id": req.get("language", "it"), "exaggeration": float(req.get("exaggeration", 0.6)),
+              "cfg_weight": float(req.get("cfg", 0.3)), "temperature": float(req.get("temperature", 0.8))}
+        if req.get("ref"):
+            kw["audio_prompt_path"] = req["ref"]
+        try:
+            with lock:
+                wav = model.generate(text, **kw)
+            data = wav.squeeze().cpu().numpy().astype("float32").tobytes()
+        except Exception as err:
+            return self._json(500, {"error": str(err)})
+        self.send_response(200); self.send_header("Content-Type", "application/octet-stream")
+        self.send_header("X-Sample-Rate", str(model.sr)); self.send_header("Content-Length", str(len(data))); self.end_headers()
+        self.wfile.write(data)
+
+
+threading.Thread(target=load, daemon=True).start()
+print(f"[chatterbox] in ascolto su 127.0.0.1:{PORT}, dispositivo {DEVICE}", flush=True)
+ThreadingHTTPServer(("127.0.0.1", PORT), H).serve_forever()