窮人救星 - schiit audio jotunheim

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泰雲斯
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窮人救星 - schiit audio jotunheim

Post by 泰雲斯 »

DAC + pre amp + balanced headphone amp ; All in one 卓上一體机。

usd $499.00

https://youtu.be/eWVmylqNQGQ" onclick="window.open(this.href);return false;

http://schiit.com/products/jotunheim" onclick="window.open(this.href);return false;

我可以用盡佢 ... :D

case 1. mojo / dp-x1 -> jotunheim -> Genelec active speakers or balanced headphones
or LKS DAC XLR out -> jotunheim XLR in -> Genelec active speakers or balanced headphones

case 2. pc1 -> jotunheim usb -> Genelec active speakers / IEM / Balanced headphones

case 3. Pc2 -> jotunheim RCA in -> Genelec active speakers / IEM / Balanced headphones

or

case 4. Monitor RCA out -> jotunheim RCA in -> Genelec active speakers / IEM / Balanced headphones

Perfect match with my gears :-bd

Amplifier:
Frequency Response: 20Hz-20Khz, -0.1db, 2Hz-700KHz, -3dB
Balanced Headphone Output:
Maximum Power, 16 ohms: 7500mW
Maximum Power, 32 ohms: 5000mW
Maximum Power, 50 ohms: 3000mW
Maximum Power, 300 ohms: 900mW
Maximum Power, 600 ohms: 500mW
Single-Ended Headphone Output:
Maximum Power, 16 ohms: 2500mW
Maximum Power, 32 ohms: 1500mW
Maximum Power, 50 ohms: 800mW
Maximum Power, 300 ohms: 350mW
Maximum Power, 600 ohms: 175mW
THD: <0.001%, 20Hz-20KHz, at 1V RMS
IMD: <0.0015%, CCIR
SNR: >109db, A-weighted, referenced to 1V RMS
Crosstalk: >-70dB, 20 Hz-20KHz
Output Impedance: Less than 0.1 ohms, balanced or SE, at both gain settings
Gain: 2 (6dB) or 8 (14dB), selectable via front switch
Inputs: Balanced XLR and Single-Ended RCA, selectable via front switch
Outputs: Balanced headphone (4-pin XLR), single-ended headphone (1/4” TRS), balanced line preamp, single-ended line preamp
Optional Inputs: AK4490 Balanced USB DAC or Passive MM Phono
Gain Stage: Proprietary Schiit Pivot Point™ fully discrete differential current-feedback topology
Power Supply: One 48VA transformer with 6 stages of discrete or integrated regulation and over 70,000uF total filter capacitance

Optional Dual AK4490 DAC:
USB Input Receiver: C-Media CM6631A
D/A Conversion IC: AK4490 x 2
Analog Output: fully differential, passive summing and passive filtering
Frequency Response: 20Hz-20KHz, +/-0.1dB, 2-100kHz, -3dB
Maximum Output: 2.0V RMS

THD: <0.0015%, 20Hz-20KHz, full scale
IMD: <0.002%, CCIR

S/N: >106dB, referenced to 2V RMS, unweighted
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sorry
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Re: 窮人救星 - schiit audio jotunheim

Post by sorry »

:-? :-?

UD-503都係用AK4490 =p~
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泰雲斯
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Re: 窮人救星 - schiit audio jotunheim

Post by 泰雲斯 »

箱得個纸箱... 好簡約
dea39b9d-65a6-4781-8fe8-49e691e393cb.jpg
519de1ec-9e66-4540-84f5-cd9ba6eab50a.jpg
fb0cab2e-8e04-4cf7-8c7e-6270fe2db6e8.jpg

用 i5 line-out 去 schiit

初步, 無衰聲發現...

我期望的接法全部成功。

我 XLR out 去 GENELEC 8030 ... 要聽 hp 就 OFF POWER, 我又 okay.

dac parts, Windows 10 自動上 driver, o effort. 即刻有聲

我由今日計有 15 日試玩, 唔得就 refund.
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Last edited by 泰雲斯 on Sat Sep 17, 2016 11:47 pm, edited 1 time in total.
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泰雲斯
Posts: 186
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Re: 窮人救星 - schiit audio jotunheim

Post by 泰雲斯 »

sorry wrote: :-? :-?

UD-503都係用AK4490 =p~
AK4490 应该好平, 这 dac card 行 dual AK4490, 卖 99.00 美金;

定位问题, 只有 DSD -> PCM x_x

但 AMP , 1 点 HUM , 底嘈 我就听唔到啦, 不论 active speakers or HE400i headphones \m/

so far, sound not bad. =p~
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泰雲斯
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Re: 窮人救星 - schiit audio jotunheim

Post by 泰雲斯 »

用了3日後的報告...

前言: 這是499.00 美金 的機, 這是499.00 美金 的機 , 這是499.00 美金 的機。重要的事講 3 次。

USB-DAC 是100.00; 淨AMP是 399.00

運費亦要48.00 美金 (2日到港)

報告: 這機不是巨人殺手 ! 但恰如其份, 1分錢... 絕對1分貨有凸

1. 3-pin XLR out active speakers (GENELEC 8030A) ; 我將 GENELEC 的 volume 䦕到盡大; 用 Jotunheim 的 volume 來控制 聲音大小。效果非常好。這組合無嘈音、開到12點、1點 音壓好大了, 我的書房7-80尺足夠有餘了。網上說轉輸入有 "pop" 一聲, 我無意去試... 每次轉 input ; RCA in <-> XLR in <-> USB-DAC ; 我都先收細聲才轉 當然無 POP 一聲啦, 因這對 speakers 好傷的。

2. 我同塲有 Massdrop O2 HP AMP, BURSON soloist HP AMP。Jotunheim 跟 O2 一樣夠氣夠力, 但夾耳機就要試過先知, 不竟耳机(大耳机、IEM) 上萬種, 我手只有幾個, 仲要係入門野...

Hifiman HE400i : 平板耳機, 無哀聲, bass 有, 推得幾好, 音場大, 不會有 fatigue 感覺...

ASG 2.5 : IEM 一樣背景寧靜, 推力夠, 這是 Hybrid 耳機, 亦是我當時入手的主因, 但推不好是好容易有 fatigue 之感, 聽 30 分鐘就要除下了, 我以前用 ipod video5 + cayin c5 組合來聽, 但我不喜歡 !!!

這次用 LKS DAC XLR out 入 Jotunheim XLR in 去 ASG 2.5 我有聽到网上評語相同的感覺
ASG 2.5 雖然是一隻圈鐵耳機,但調音方面很明顯能感覺得出來,其實是一隻動圈耳機加上兩個動鐵。以14.2mm大單體的聲音而言,表現十分優異,再加上兩個動鐵單元的幫助,對於高頻解析部分又比一般動圈耳機來得更加優良。能量感龐大,整體很澎湃,雖然解析力不像一般動鐵耳機那樣犀利,不過依然卻有著舒適、清楚的聲音,蠻適合各種類型的音樂。
http://www.jmplus.com.tw/2015/01/auriso ... g-2.5.html" onclick="window.open(this.href);return false;

p.s. 我只用了 low gain.

再玩下先, 有新感覺再出報告。
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泰雲斯
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Re: 窮人救星 - schiit audio jotunheim

Post by 泰雲斯 »

淘了隻 4-pin XLR > 2.5mm AK balance 頭
188cbafe-7d38-422f-8401-f23ab06dbb7f.jpg
插入狀况。

d Headphone /IEM balance 可以直插了...
11142a82-76a6-4d8a-bed9-e7e121fce37f.jpg
43b45186-f182-49dd-be9b-dcfa44e62a3e.jpg
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泰雲斯
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Re: 窮人救星 - schiit audio jotunheim

Post by 泰雲斯 »

v-moda m100 剛插來試下;
c3ffaaae-4b42-4bc6-b9e7-8bc05a741c4f.jpg
嘩... 嘩... 嘩...

推得好好, 平衡下, 一d 唔會輸比 dp-x1

再要試下 平衡 HE-400i, u10 先
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