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Low Phase Noise ClockGET 18% GST INPUT
One of the reasons headphones and earphones in India are more expensive than overseas is
because of the Goods & Services Tax in India.
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especially if you can avail an offset.
All products sold on Headphone Zone carry
a GST compliant invoice and all products sold include an 18% GST.
Simply enter
your GST number at the time of checkout.
Browse EMI Plans
Low Cost EMI Options through Credit Cards
ICICI Bank
3
Low Cost EMI
₹ 61,606
₹ 4,818
₹ 3,883
6
Low Cost EMI
₹ 31,414
₹ 8,487
₹ 6,867
9
15.99%
₹ 21,356
₹ 12,204
12
15.99%
₹ 16,331
₹ 15,968
18
15.99%
₹ 11,313
₹ 23,639
24
15.99%
₹ 8,812
₹ 31,500
HDFC Bank
3
Low Cost EMI
₹ 61,607
₹ 4,821
₹ 3,883
6
Low Cost EMI
₹ 31,415
₹ 8,493
₹ 6,867
9
16%
₹ 21,357
₹ 12,212
12
16%
₹ 16,331
₹ 15,979
18
16%
₹ 11,314
₹ 23,655
24
16%
₹ 8,813
₹ 31,520
SBI Bank
3
Low Cost EMI
₹ 61,657
₹ 4,973
₹ 3,999
6
Low Cost EMI
₹ 31,326
₹ 7,956
₹ 6,407
9
15%
₹ 21,271
₹ 11,436
12
15%
₹ 16,246
₹ 14,958
18
16%
₹ 11,314
₹ 23,655
24
16%
₹ 8,813
₹ 31,520
Axis Bank
3
Low Cost EMI
₹ 61,607
₹ 4,821
₹ 3,883
6
Low Cost EMI
₹ 31,415
₹ 8,493
₹ 6,867
9
16%
₹ 21,357
₹ 12,212
12
16%
₹ 16,162
₹ 13,940
18
16%
₹ 11,314
₹ 23,655
24
16%
₹ 8,813
₹ 31,520
Other EMI Options through Credit Cards
Citi Bank
3
14%
₹ 61,405
₹ 4,216
6
14%
₹ 31,237
₹ 7,421
9
16%
₹ 21,357
₹ 12,212
12
16%
₹ 16,331
₹ 15,979
18
16%
₹ 11,314
₹ 23,655
24
16%
₹ 8,813
₹ 31,520
Kotak Mahindra Bank
Tenure
Interest%
Installment
Interest
3
16%
₹ 61,607
₹ 4,821
6
16%
₹ 31,415
₹ 8,493
9
16%
₹ 21,357
₹ 12,212
12
16%
₹ 16,331
₹ 15,979
18
16%
₹ 11,314
₹ 23,655
24
16%
₹ 8,813
₹ 31,520
RBL Bank
3
13%
₹ 61,304
₹ 3,914
6
14%
₹ 31,237
₹ 7,421
9
15%
₹ 21,271
₹ 11,436
12
15%
₹ 16,246
₹ 14,958
18
15%
₹ 11,229
₹ 22,127
24
15%
₹ 8,728
₹ 29,462
Standard Chartered Bank
3
13%
₹ 61,304
₹ 3,914
6
13%
₹ 31,148
₹ 6,886
9
14%
₹ 21,185
₹ 10,662
12
14%
₹ 16,162
₹ 13,940
INDUSIND Bank
3
14%
₹ 61,405
₹ 4,216
6
14%
₹ 31,237
₹ 7,421
9
15%
₹ 21,271
₹ 11,436
12
15%
₹ 16,246
₹ 14,958
18
15%
₹ 11,229
₹ 22,127
24
15%
₹ 8,728
₹ 29,462
HSBC Bank
3
12.50%
₹ 61,254
₹ 3,763
6
12.50%
₹ 31,103
₹ 6,619
9
13.50%
₹ 21,142
₹ 10,276
12
13.50%
₹ 16,119
₹ 13,432
18
13.50%
₹ 11,103
₹ 19,847
YES Bank
3
13%
₹ 61,304
₹ 3,914
6
13%
₹ 31,148
₹ 6,886
9
14%
₹ 21,185
₹ 10,662
12
14%
₹ 16,162
₹ 13,940
18
15%
₹ 11,229
₹ 22,127
24
15%
₹ 8,728
₹ 29,462
Bank of Baroda
3
13%
₹ 61,304
₹ 3,914
6
14%
₹ 31,237
₹ 7,421
9
14%
₹ 21,185
₹ 10,662
12
15%
₹ 16,246
₹ 14,958
18
15%
₹ 11,229
₹ 22,127
24
16%
₹ 8,813
₹ 31,520
American Express
3
14%
₹ 61,405
₹ 4,216
6
14%
₹ 31,237
₹ 7,421
9
14%
₹ 21,185
₹ 10,662
12
14%
₹ 16,162
₹ 13,940
18
15%
₹ 11,229
₹ 22,127
24
15%
₹ 8,728
₹ 29,462
Talk to a Headphone Guru
1. What is a Pre-Order product?
A Pre-order product is a product that we especially order for you from the brand. Once you place an order with us, we will order it from the brand for you.
2. How do I know when the product will be delivered?
There is a rough timeline on the product availability and once it has been confirmed with the brand, we will inform you.
3. Do you order the product from the brand as soon as I place the order?
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4. Will you be giving me updates?
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Defective? Tell us within 7 days. We'll take care of it.
Something wrong with your product? We'll sort it out.
Wrong product, damaged, or missing parts: Let us know within 24 hours of delivery. If it's just an accessory, we'll replace the accessory.
What we'll need:
- Product in original packaging with all accessories
- Unboxing video and images of the parcel
This helps us see what went wrong and move faster.
Manufacturing defect: Let us know within 7 days of delivery. We'll replace or refund.
The process:
1. Raise a request - you'll get a RET number and hear from us by the next working day.
2. Once approved, we arrange pickup.
3. We inspect the product (2-3 working days).
4. Replacement shipped or store credit or refund issued.
A replacement or refund will be issued if:
- The product is found to be defective
- It wasn't damaged while in your possession-
- The same product is returned in original condition - box, MRP tag, manual, warranty card, all accessories
READ THE FULL REPLACEMENT POLICY
2 Year warranty included. You're covered.
This GUSTARD - C18 comes with a 2 Year manufacturer's warranty from GUSTARD, covering manufacturing defects.
Every product on Headphone Zone is backed by an original manufacturer's warranty.
Need support? Start with us. We handle most brands' warranty claims directly, and for the rest, we'll help you connect with the brand.
Read about GUSTARD's Warranty
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Chi-Fi
Excellence
2 Years of
Warranty
Ideal for Audiophiles
Metal
Build
DESCRIPTION
REFERENCE AUDIO CLOCK FOR THE HIGHEST QUALITY RECORDING AND AUDIO PLAYBACK
To achieve high-quality recording and playback capabilities, a higher performance clock, that can be used as a system reference, is a must. The Gustard's C18 is one of the most sought after audio clocks by many users who use it to enhance the audio recording and playback quality. Engineered with an ultra-low noise oscillation core, the C18 offers advanced signal generation, transmission, distribution and driving. You can be anyone from an audio engineer, music producer or an audiophile, the Gustard C18 is for you to experience sound in the highest quality possible.

CUSTOMIZED SC CUT OCXO LOW NOISE ISOTHERMAL CRYSTAL FOR DETAILED AND REALISTIC AUDIO PERFORMANCE
Managing the temperature efficiently is vital to the performance of the audio clock. The quartz crystal resonator installed in the crystal oscillator often faces high-temperature issues. To deal with this the Gustard C18 employs oven-controlled SC Cut Ocxo crystal isothermal oscillators that use a constant temperature bath to keep the temperature in check. This low noise crystal oscillator reduces fluctuations in the oscillator output frequency caused by changes in ambient temperature. The upgraded oscillation core ensures detailed playback, realistic restoration and an optimized sound performance way better than the previous model C16.


LOW LOSS GDRV-P1 DRIVER ENABLING INDEPENDENT SQUARE & SINE WAVE OUTPUT
The back-end equipment cannot be driven by the power of the OCXO alone. On being directly connected to the back-end equipment, it raises challenges like signal instability, causing indicators degradation and adversely affecting the sound. Additionally, connecting multiple devices at a time becomes impossible. To address these issues head-on the Gustard C18 comes with a dedicated driving circuit—GDRV-P1. This high-performance low-loss driver lowers phase noise output while also delivering two independent signals for square wave and sine wave output at a time. This leads to a better connection with the back-end equipment. You can pair the Gustard C18 with a customised C2 clock line (sold separately) to further enhance the performance.

GET NOTHING BUT PURE SOUND WITH A LINEAR POWER SUPPLY & AUDIO DEDICATED TOROIDAL
When it comes to the performance of audio clocks, a stable circuit is essential. With the Gustard C18, there are discrete components employed in compliance with the voltage that not only ensure a stabilized circuit but also increase the response speed while keeping the ripple and temperature drift at the minimum. The use of audio dedicated toroidal along with integrated linear power supply, hierarchical and multi-channel voltage stabilization, reduced crosstalk and clean power supply pave the way for clean and pure sound.



PAIRS SEAMLESSLY WITH A HOST OF AUDIO DEVICES THAT CAN INPUT 10M CLOCK SIGNALS
High-grade audio clocks like the Gustard C18 have always played a crucial role in the HiFi digital field as they bring about significant improvements in the overall sound. With the potential to reduce clock signal distortion, the Gustard C18 can be best paired with U16, S16 and X26PRO. You can connect the C18 with other audio devices provided they can take 10M clock signals.

SPECS
| MODEL | C18 Constant temper clock |
| OUT FREQUENCY | 10MHz |
| FREQUENCY ACCURACY | <土300ppb |
| FREQUENCY STABILITY | <±50ppb |
| OUTPUT AMPLITUDE | >7dBm @50Rz |
| OUTPUT WAVEFORM | Sine wave and square wave output |
| OUTPUT IMPEDANCE | 50Ω |
| PHASE NOISE @1Hz(TYP) | -110dBc |
| POWER INPUT | AC 115V/230V 50/60Hz |
| POWER CONSUMPTION | <15W |
| SHORT TERM STABILITY(ALLAN DEVATION)8E-13 | -110dBc |
| FUSELAGE SIZE | wide 220 mm*high 50 mm* deep 170 mm (Deep without protrusion) |
| PACKAGE SIZE | wide 285 mm*high 85 mm*deep 270 mm |
| WEIGHT | 2.5Kg (Including packaging) |
| BOX CONTENTS | 1. GUSTARD C18 Audio Clock |
OTHER DETAILS
| GENERIC NAME | Audio Clock |
| COUNTRY OF ORIGIN | China |
| IMPORTER DETAILS | Importers Name: Ferrari Video Address: 63/18, 1st Main Road, Gandhi Nagar, Chennai - 600020 Contact No: 044-24420733 |
| NET QUANTITY | 1 |
| PACKAGE CONTENTS | GUSTARD C18 Audio Clock |
REFERENCE AUDIO CLOCK FOR THE HIGHEST QUALITY RECORDING AND AUDIO PLAYBACK
To achieve high-quality recording and playback capabilities, a higher performance clock, that can be used as a system reference, is a must. The Gustard's C18 is one of the most sought after audio clocks by many users who use it to enhance the audio recording and playback quality. Engineered with an ultra-low noise oscillation core, the C18 offers advanced signal generation, transmission, distribution and driving. You can be anyone from an audio engineer, music producer or an audiophile, the Gustard C18 is for you to experience sound in the highest quality possible.

CUSTOMIZED SC CUT OCXO LOW NOISE ISOTHERMAL CRYSTAL FOR DETAILED AND REALISTIC AUDIO PERFORMANCE
Managing the temperature efficiently is vital to the performance of the audio clock. The quartz crystal resonator installed in the crystal oscillator often faces high-temperature issues. To deal with this the Gustard C18 employs oven-controlled SC Cut Ocxo crystal isothermal oscillators that use a constant temperature bath to keep the temperature in check. This low noise crystal oscillator reduces fluctuations in the oscillator output frequency caused by changes in ambient temperature. The upgraded oscillation core ensures detailed playback, realistic restoration and an optimized sound performance way better than the previous model C16.


LOW LOSS GDRV-P1 DRIVER ENABLING INDEPENDENT SQUARE & SINE WAVE OUTPUT
The back-end equipment cannot be driven by the power of the OCXO alone. On being directly connected to the back-end equipment, it raises challenges like signal instability, causing indicators degradation and adversely affecting the sound. Additionally, connecting multiple devices at a time becomes impossible. To address these issues head-on the Gustard C18 comes with a dedicated driving circuit—GDRV-P1. This high-performance low-loss driver lowers phase noise output while also delivering two independent signals for square wave and sine wave output at a time. This leads to a better connection with the back-end equipment. You can pair the Gustard C18 with a customised C2 clock line (sold separately) to further enhance the performance.

GET NOTHING BUT PURE SOUND WITH A LINEAR POWER SUPPLY & AUDIO DEDICATED TOROIDAL
When it comes to the performance of audio clocks, a stable circuit is essential. With the Gustard C18, there are discrete components employed in compliance with the voltage that not only ensure a stabilized circuit but also increase the response speed while keeping the ripple and temperature drift at the minimum. The use of audio dedicated toroidal along with integrated linear power supply, hierarchical and multi-channel voltage stabilization, reduced crosstalk and clean power supply pave the way for clean and pure sound.



PAIRS SEAMLESSLY WITH A HOST OF AUDIO DEVICES THAT CAN INPUT 10M CLOCK SIGNALS
High-grade audio clocks like the Gustard C18 have always played a crucial role in the HiFi digital field as they bring about significant improvements in the overall sound. With the potential to reduce clock signal distortion, the Gustard C18 can be best paired with U16, S16 and X26PRO. You can connect the C18 with other audio devices provided they can take 10M clock signals.

| MODEL | C18 Constant temper clock |
| OUT FREQUENCY | 10MHz |
| FREQUENCY ACCURACY | <土300ppb |
| FREQUENCY STABILITY | <±50ppb |
| OUTPUT AMPLITUDE | >7dBm @50Rz |
| OUTPUT WAVEFORM | Sine wave and square wave output |
| OUTPUT IMPEDANCE | 50Ω |
| PHASE NOISE @1Hz(TYP) | -110dBc |
| POWER INPUT | AC 115V/230V 50/60Hz |
| POWER CONSUMPTION | <15W |
| SHORT TERM STABILITY(ALLAN DEVATION)8E-13 | -110dBc |
| FUSELAGE SIZE | wide 220 mm*high 50 mm* deep 170 mm (Deep without protrusion) |
| PACKAGE SIZE | wide 285 mm*high 85 mm*deep 270 mm |
| WEIGHT | 2.5Kg (Including packaging) |
| BOX CONTENTS | 1. GUSTARD C18 Audio Clock |
OTHER DETAILS
| GENERIC NAME | Audio Clock |
| COUNTRY OF ORIGIN | China |
| IMPORTER DETAILS | Importers Name: Ferrari Video Address: 63/18, 1st Main Road, Gandhi Nagar, Chennai - 600020 Contact No: 044-24420733 |
| NET QUANTITY | 1 |
| PACKAGE CONTENTS | GUSTARD C18 Audio Clock |
Don't sweat it, this
GUSTARD - C18 comes with a 2 Year warranty
from GUSTARD that covers manufacturing defects.
All products featured on Headphone Zone are backed by an original manufacturer's warranty.
Read more about GUSTARD's warranty in India.

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