Full Description
Independent, Low-noise Circuit Path
The TEAC NT-505-X Preamplifier uses a sophisticated dual monaural circuit design, ensuring that functions throughout the conversion process can take place independently of each other in separate, yet synchronised channels. From the dual oversized, high capacity toroidal transformers, through the DAC circuits and all the way to the output terminals, single channel processing ensures that unwanted noise is kept to an absolute minimum, with a consistent power supply regardless of demand. Boasting an excellent S/N ratio and total harmonic distortion below 0.002%.
High-Quality D/A Conversion
The dual monaural nature of the circuitry means that two D/A converter chips are built into each left and right channel. Using class leading ESS technology, these two ES9038Q2M SABRE32 Reference DACs ensure vastly diminished jitter and accurate USB data conversion up to 768kHz/32bit PCM and 22.5MHz DSD, bringing you closer than ever to the original recording. The two on-board clocks allow lightning fast sampling rates for 44.1kHz or 48kHz signals, with a BNC terminal to accommodate an external master clock generator for exponentially higher 10MHz sampling.
Output Signal Consistency
Once the conversion process has taken place, the analogue section of the NT-505-X guarantees the consistency of the current by introducing a buffer amp into the circuit path; The TEAC-HCLD 2 (an upgrade of the previous High Current Line Driver) bolsters the current supply. This HCLD also broadens the scope of compatible with high-end headphones, with superior channel separation and clear audio. Highley adjustable, volume control has also been integrated directly into the signal path in the form of a discrete four channel variable gain amp, adjustable in 0.5dB degrees.
High-Quality Network Streaming
Coming with the free TEAC HR PC audio player (supporting 22.5MHz DSD and 32bit / 768kHz PCM processing) and streaming app for mobile devices (5.6MHz DSD and 192kHz PCM), enjoy high-quality music playback no matter how you’re connected. MQA decoding allows you to listen to your online playlists even if you have a weak internet connection, using advanced compression technology to efficiently retain an audiophile standard of music quality, remaining emotive and clear.
However, it doesn’t end there!
The NT-505-X is also compatible with multiroom Hi-res audio apps such as OpenHome and Roon, meaning it can be seamlessly integrated into your wireless home audio setup. Perfect for use with internet streaming services such as Spotify, TIDAL, Qobuz and Tunin, (as well as wireless connection with a range of Bluetooth audio codecs) get fast access to unlimited lossless audio.
Diligent Design
What’s the use of all this enhanced technology if it doesn’t have the physique to support it? The NT-505-X is an example of TEAC’s engineering prowess. Strong 8mm panels prevent the all-metal chassis from warping and defend from external electromagnetic forces found in most domestic environments. This contributes to the low noise level, making sure the internal circuits remain uninterrupted whilst in use.
The three feet have been placed strategically to the support key components within the unit and are specially designed so that, whilst they appear loose when lifted, they allow the feet to sit securely even on relatively uneven surfaces. This design also reduces intrusions from external vibrations and contributes to the overall isolation of the NT-505-X.
Key Features
- Incorporates an ESS ES9038Q2M SABRE32 Reference DAC chip per channel for dual monaural circuit design
- TEAC-HCLD2 output buffer circuit retains signal consistency
- Two integrated clocks detect 44.1kHz or 48kHz frequency requirements
- Available connection for 10MHz external clock input, perfect for use with the TEAC CG-10M
- DSD512 (22.5MHz) and PCM 768kHz/32bit PCM for audiophile level quality playback
- DSD128 (5.6MHz) and PCM 192kHz/24bit LAN streaming for NAS and PC digital libraries
- 7 PCM digital filters let you modify audio nuance based on your music
- RDOT-NEO rendering algorithms for smooth, audio-improving up-conversions up to 384kHz/32bit PCM and 24.5MHz DSD
- Support for precision MQA decoding for true audio processing
- Connect via Bluetooth, with support high-quality formats; LDAC, Qualcomm aptX HD, AAC and SBC
- USB input supports high resolution playback
- Bulk Pet limiter technology ensures that USB transition is regulated, levelling burdens caused by heavy loads and preventing sound drop-outs
- 3.5mm 4-pole stereo headphone connection
- Stressless Foot design offers vibration dampening support
Specifications
Supported Formats
| USB PCM | 16/24/32 bit
44.1k/48k/88.2k/96k/176.4k/192k/352.8k/384k/705.6k/768k Hz |
|---|---|
| USB DSD | 2.8M/5.6M/11.2M/22.5M Hz |
| Coaxial Digital PCM | 16/24 bit
32k/44.1k/48k/88.2k/96k/176.4k/192k Hz |
| Coaxial Digital DSD | 2.8MHz (supported with 176.4kHz/24-bit DoP format) |
| Optical Digital PCM | 16/24 bit
32k/44.1k/48k/88.2k/96k/176.4k/192k Hz |
| Optical Digital DSD | 2.8MHz (supported with 176.4kHz/24-bit DoP format) |
DAC
| USB DAC | ESS Technology ES9038 Q2M Ă—2 |
|---|---|
| Up-conversion | up to 384kHz/32-bit PCM, 24.5MHz DSD |
LAN
| Connector | RJ-45Ă—1(1000Base-T) |
|---|---|
| MQA Decoder | Built-in |
Audio Inputs
USB (Rear)
| Connection type | USB B port, USB 2.0, asynchronous mode transfer, bulk transfer |
|---|---|
| Compatible Software | TEAC HR Audio Player (Windows, Macintosh) |
Coaxial Digital (Rear)
| Connection type | x1 RCA pin (gold-plated) |
|---|---|
| Input level | 0.5Vp-p |
| Input impedance | 75Ω |
Optical Digital (Rear)
| Connection type | x1 TOS-link |
|---|---|
| Input level | -24.0 to -14.5dBm peak |
Coaxial Digital (Front)
| Connection type | x1 1/8” (3.5mm) mini (combined with optical digital input, detected automatically) (1/8” mini-RCA conversion cable included) |
|---|---|
| Input level | 0.5Vp-p |
| Input impedance | 75Ω |
Optical Digital (Front)
| Connection type | x1 1/8” Mini Optical (combined with coaxial digital input, detected automatically) |
|---|
USB (Front)
| Connection type | USB A port |
|---|---|
| Supported media | USB Flash Drive |
Bluetooth®
| Bluetooth® version | 4.0 |
|---|---|
| Output class | Class2 (Range: approx. 33ft/10m) |
| Supported profiles | A2DP
AVRCP |
| Content protection | SCMS-T |
| Supported codec | LDAC™
Qualcomm® aptX™ HD
aptX™
AAC
SBC |
| No. of paired device | Maximum 8 devices |
Audio Outputs
XLR Balanced
| Connection type | x1 XLR pair (gold-plated) |
|---|---|
| Maximum output level | 2.0Vrms (1kHz, full scale, into 10kΩ, when set to fixed (0dB))
4.0Vrms (1kHz, full scale, into 10kΩ, when set to fixed (+6dB))
12.0Vrms (1kHz, full scale, into 10kΩ, when set to variable) |
| Output impedance | 188Ω |
RCA Unbalanced
| Connection type | x1 RCA pin pair (gold-plated) |
|---|---|
| Output level | Fixed (0dB), fixed (+6dB), variable, output off (selectable) |
| Maximum output level | 2.0Vrms (1kHz, full scale, into 10kΩ, when set to fixed (0dB))
4.0Vrms (1kHz, full scale, into 10kΩ, when set to fixed (+6dB))
6.0Vrms (1kHz, full scale, into 10kΩ, when set to variable) |
| Output impedance | 150Ω |
Headphone Outputs
| Connection type | x1 1/8” (3.5mm) Stereo TRS jack (gold-plated) |
|---|---|
| Polarity | Tip:L+, Ring1:R+, Ring3:L-, Sleeve:R- |
| Maximum output | 500mW + 500mW (into 32Ω) |
| Supported impedances | 16 to 600Ω |
Clock Section
Internal Clock
| Type | Crystal oscillator |
|---|---|
| Number of clocks | 2 (44.1kHz and 48kHz) |
External clock input
| Connector | BNC (gold-plated) |
|---|---|
| Input frequency | 10MHz |
| Input impedance | 50Ω |
| Input level | Rectangle wave: equivalent to TTL levels
Sine wave: 0.5 to 1.0 Vrms |
Audio Performance
| Frequency Response | 10 to 80,000 Hz (+1/-3 dB, 192kHz PCM input, RCA output, digital filter off) |
|---|---|
| Total harmonic distortion | 0.002 or less (192kHz PCM input, RCA output, digital filter off) |
| S/N ratio | 110dB or higher (192kHz PCM input, RCA output, digital filter off) |
Power
| Power supply | AC 220 to 240V 50Hz |
|---|---|
| Power consumption (Operating) | 18W |
| Power consumption (Standby) | 0.4W |
General
| Dimensions (Including Protrusions) (W x H x D) | 290 x 84.5 x 248.7 mm |
|---|---|
| Weight | 4.1kg |
| Included Accessories | Power cord
RCA mini plug adapter cable
Remote control (RC-1330)
x2 AAA batteries
Owner’s Manual |
| Available Colours | Black
Silver |










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